Slashdot Mirror


Firefox's Blocked-By-Default Java Isn't Going Down Well

JG0LD writes "The Firefox web browser will, henceforth, require users to manually activate Java objects on sites that they visit, Mozilla has confirmed. This even affects up-to-date versions of Java, which you can see on the block list. The change is aimed at improving security and moving away from a dependence on proprietary plug-ins, but critics say it will cause untold headaches for developers, admins and less-technical end-users. "

41 of 362 comments (clear)

  1. Didn't they learn from Microsoft? by Anonymous Coward · · Score: 5, Insightful

    Users hate authorizing things, and become trained drones blindly okaying everything anyway.

    As security models go, it's a poor one.

    1. Re:Didn't they learn from Microsoft? by Doh! · · Score: 4, Insightful

      So... they should disable all plugins like Java and Flash and not let the user authorize anything? That would never work.

    2. Re:Didn't they learn from Microsoft? by Microlith · · Score: 3, Insightful

      Fortunately it still works, it just won't give a security hole riddled platform automatic access to your PC.

    3. Re:Didn't they learn from Microsoft? by sortius_nod · · Score: 4, Insightful

      Indeed, never trust basic security to users. Better to keep a your workstations up-to-date & deal with the IT nightmare that is updating rogue workstations than to deal with the IT apocalypse of click monkeys.

    4. Re:Didn't they learn from Microsoft? by Capsaicin · · Score: 3, Insightful

      Fortunately it still works ...

      But it doesn't just work.

      The browsers installed by default on the OS do. In fact switching back to them is even easier than installing the plugin. And yes some users will install the plugin, but some will change browsers instead.

      This seems a blunt way to audit the security of plugins and one guaranteed to reduce user numbers.

      --
      Better to be despised for too anxious apprehensions, than ruined by too confident a security. --Edmund Burke
    5. Re:Didn't they learn from Microsoft? by erroneus · · Score: 4, Insightful

      Yes, while I tend to agree with that notion, I also have to remind that this is web Java applets we're talking about. Who does that any more? There are four places where I see that:

      1. Business/Office web based apps (Documentum in my case)
      2. Cisco "web interfaces"
      3. An older HP print server "web interface."
      4. Webmin (optional) controls for telnet/ssh and file management.

      In each of those cases, I am very comfortable making those explicit exceptions. There may be more. Not wanting to speak for the whole world, but at this point, I can't imagine this being a huge problem. So anyone, please correct me if I'm wrong by providing other examples.

    6. Re:Didn't they learn from Microsoft? by buchner.johannes · · Score: 5, Informative

      Actually it's not an authorization dialog, but a "click-to-play" on the embed objects. You can get the same functionality already by setting plugins.click_to_play to true in about:config. That is just going to be a default setting on new installs, but you can set it to false. I set it to true myself, because it is useful to not have arbitrary Flash code to just start running (and playing).

      The gamble Mozilla makes is that because of the extra step, companies will move to putting content into HTML5 rather than external plugins, because it makes their website more clunky. They also do replace external PDF viewer plugins with a HTML5/JS based one, so it is a coherent strategy towards open technologies. There are plenty of benefits if it works out, security is one of them. And it's a phased, non-invasive method, which can be disabled.

      --
      NB: The message above might reflect my opinion right now, but not necessarily tomorrow or next year.
    7. Re:Didn't they learn from Microsoft? by Lennie · · Score: 4, Informative

      Chrome ? I wouldn't count on that:

      "By the end of 2014 Google intends to completely remove the Netscape Plug-in API."

      http://www.infoq.com/news/2013/09/NPAPI-Depricated

      --
      New things are always on the horizon
    8. Re:Didn't they learn from Microsoft? by Anonymous Coward · · Score: 4, Interesting

      Yes, while I tend to agree with that notion, I also have to remind that this is web Java applets we're talking about. Who does that any more? There are four places where I see that:

      1. Business/Office web based apps (Documentum in my case) 2. Cisco "web interfaces" 3. An older HP print server "web interface." 4. Webmin (optional) controls for telnet/ssh and file management.

      In each of those cases, I am very comfortable making those explicit exceptions. There may be more. Not wanting to speak for the whole world, but at this point, I can't imagine this being a huge problem. So anyone, please correct me if I'm wrong by providing other examples.

      Most online banking systems in Scandinavia use Java applet. Same Java-based id/login system can be used for many public services and for web shop payments. They are working on moving away from it, but for now being able to do online banking is a pretty key requirement for most users. I have Chrome set up with my bank as only trusted site where the Java applet is activated, for all other sites it is deactivated. As long as my bank is not compromised and serving malware through Java vulns that should be ok.

      As for Flash, many people seem to think that HTML5 video support can replace Flash, but then you are not aware of the huge amount of popular Flash games out there. As a tower defense game addict Flash is just a necessity for a long while still.

    9. Re:Didn't they learn from Microsoft? by Anonymous Coward · · Score: 4, Insightful

      It is not a security model. It is a responsibility model.
      Now the responsibility lies even less with Mozilla and more with the user who installed Java in the first place.
      If that user can not take hint, and becomes a trained drone, that is his problem. The only more secure thing to do would be to simply refuse running java at all. Obviously that is even less realistic.

    10. Re:Didn't they learn from Microsoft? by HJED · · Score: 3, Informative

      There's actually a process for getting certified as having a valid implementation of java, I think that you don't have to pay license fees for it either ... however it is as about as 'easy' again as 'just' writing a jvm. Given Mozilla can't even write a PDF viewer with Unicode support I don't see that happening.
      If there was a better cross platform alternative I'd switch to it.

      --
      null
    11. Re:Didn't they learn from Microsoft? by erroneus · · Score: 4, Interesting

      As I run adblock and noscript, I'm already extremely comfortable with the white-list approach to securing browsers... so grains of salt in all of that -- users are not usually accustomed to the concept. I hadn't considered it when I first posted at 3-something AM this morning in my sleep. That said, it's useful to know that there are indeed still public/internet facing sites out there using Java. Shame on them.

    12. Re:Didn't they learn from Microsoft? by hairyfeet · · Score: 3, Insightful

      Insightful? Really? A locked down control freak company cuts out anything that would compete with their appstore crapstore and you APPLAUD that shit? So by your logic Win 8 would be the most perfect OS evar if they nonly made it so it will only run MSFT approved software from the crapstore? You DO know that the original plan for iOS was to have it so ONLY Apple could have native apps, with everyone else stuck in an HTML ghetto and THAT is why Jobs killed any chance of Flash on iOS, yes?

      As for TFA I was a FF user before it was even called FF, and the suite before that, but no more, its simply a bad idea security wise to run FF any longer from Windows. See my journal for the Yahoo Porn Bug, one of many that will ONLY run on FF thanks to their frankly piss poor security mdoel. Chromium had support for running the browser in low rights mode less than 6 months after Vista was released, this same low rights mode could trivially be added to AppArmor or SELinux yet here it is SEVEN YEARS LATER and FF still makes the browser run with the same rights as the user? Madness!

      People can hate and call me names but that won't change reality and reality is good security practices are good, bad practices re bad, and to run the #1 attack vector on ANY computer at the same permission level as the user is piss poor design. You have several FOSS browsers to choose from that have MUCH better security such as Chromium, I'd recommend using one of those and staying away from FF, especially if you are on Windows where even IE runs at a lower permission level than FF.

      --
      ACs don't waste your time replying, your posts are never seen by me.
  2. Headaches for developers? by Anonymous Coward · · Score: 4, Insightful

    They should probably get their heads checked, why are they making Java apps for webpages still?

    1. Re:Headaches for developers? by characterZer0 · · Score: 4, Informative

      In my case, applets for doing signatures with USB signature tablets. Can't do that in JavaScript.

      --
      Go green: turn off your refrigerator.
    2. Re:Headaches for developers? by GumphMaster · · Score: 3, Informative

      I don't know... they built a substantial client-side Java app some years ago, it still works, and they don't feel the urge to reinvent a perfectly good wheel. E*Trade Australia still uses client-side Java.

      --
      Patent litigation: A doctrine of Mutually Assured Destruction... in which everyone seems willing to push the button
    3. Re:Headaches for developers? by Dahamma · · Score: 5, Informative

      Because Java allows native access to USB hardware. Haven't seen that in Javascript.

      And no offense, but do you know what a digital signature is? Having the source code to the algorithm doesn't affect security. That would be like saying "I know how AES works, therefore I can decrypt all AES-encrypted data!" Doesn't work that way.

    4. Re:Headaches for developers? by BitterOak · · Score: 5, Interesting

      Because Java allows native access to USB hardware.

      Maybe that's a darn good reason for requiring people to authorize Java applets manually!

      --
      If I can be modded down for being a troll, can I be modded up for being an orc, or a balrog?
    5. Re:Headaches for developers? by Dahamma · · Score: 3, Insightful

      Why is it surprising you can access to hardware features with Java *if you approve it*? I can access hardware with Python after I approve it, and that proves very useful. It's all about granting lower level access from interpreted languages - they already ask when they need these permissions, what else do you want, a human sacrifice?

      I mean, really - you can install a native plugin or you can run a Java applet - both require user intervention for this level of access. Maybe I am underestimating the human population, but when both explicitly tell you exactly what enabling them allows it really doesn't matter - you either allow it or you don't.

  3. Already considering uninstalling firefox by Puls4r · · Score: 4, Insightful

    I'm not a developer, but I'm pretty savvy with computers. So the first time I got that message, I went and updated Java. Fixed it, right? Nope. So I clicked around, and finally accidentally clicked on the little red icon up in the menu bar. Success! Now it gave me an option to run it. Which popped up another window asking for permission. Dear Firefox: You have a small portion of the browser market. Making yourself a nuisance by breaking big pieces of the web is not intelligent. It just drives people to chrome, or IE. Especially everyday users who don't want to screw around and just want things to work.

    1. Re:Already considering uninstalling firefox by reve_etrange · · Score: 4, Informative

      It just drives people to chrome

      Good luck, Chrome has the same behavior. Even with a signed applet and updated Java, Chrome users had to click twice to run.

      For the /.ers astounding by the persistence of Java applets, I was working with JMol. I bypassed the issue by switching to the HTML5-and-JavaScript version and using the applet as a fall-back.

      --
      .: Semper Absurda :.
    2. Re:Already considering uninstalling firefox by Kjella · · Score: 5, Informative

      Well, if you're in Norway then 800-900,000 people use it daily and 2.9 million occasionally to access their bank and various other public services through BankID. They are moving away from Java now after all the security issues, it was announced in April but hasn't happened yet so with this I expect Firefox usage here will drop like a rock.

      --
      Live today, because you never know what tomorrow brings
    3. Re:Already considering uninstalling firefox by Anonymous+Brave+Guy · · Score: 3, Insightful

      Anyway, generally warning people before loading any java applet: "This plugin is insecure" is great.

      No, warning people before loading an insecure plugin that it is insecure is great. Warning people that a newly updated plugin with no known vulnerabilities is insecure confuses them and teaches them that your security messages are worthless and they should just click yes.

      I don't think anyone is claiming that Java is some paragon of Internet virtue that should be trusted without question, or that blocking plugins from unknown sites until the user OKs them is necessarily a bad idea. However, crying wolf and creating obscure UIs and turning everyday software into nuisanceware isn't a good response.

      --
      If you disagree, post your argument. (-1, Overrated) isn't your personal censorship tool for views you don't like.
  4. Like? by The+Cat · · Score: 4, Insightful

    moving away from a dependence on proprietary plug-ins

    Like the browsers themselves?

    Hey maybe we can get all the people at Adobe and Oracle laid off the same week. Wouldn't that be fun?

    Isn't it great how the web is moving away from "proprietary plug-ins" and straight into proprietary mobile devices?

    And look at the web users cheer. The people who built the web would recoil in horror at what you have allowed to happen to the Internet.

    I give it five years, maybe six, and the Internet will be completely walled off by a McDonalds logo.

  5. At this rate... by JohnA · · Score: 5, Funny

    Firefox will be exactly what Scott Adams predicted...

    http://dilbert.com/strips/comic/1995-03-25/

    Applets may be "The Debil", but they also fill a need that can't be filled by Flash or HTML5.

    Mozilla needs to get over themselves.

  6. Who cares? by Hecatonchires · · Score: 4, Funny

    Java is huge in the business back end, but front end Java just leaves a bad taste in the mouth of users. Slow, bloated, painful to use and kinda salty.

    --

    Yay me!

  7. Untold headaches? by ichthus · · Score: 4, Insightful

    We'll see. I've been running the FlashBlock plugin for years (to manually enable flash elements) with VERY FEW adverse effects. I doubt having to manually activate Java elements will be any worse.

    --
    sig: sauer
    1. Re:Untold headaches? by macraig · · Score: 5, Insightful

      You just succinctly explained why tools like NoScript are so desperately needed, not why they aren't. The real problem is Web design that serves an agenda contrary to the desires and rights of those who use the Web. Fix that problem and annoying tools like NoScript won't be necessary.

      What that means, BTW, is that Web developers need to grow both a conscience and a spine and say NO when they're asked to code Bad Things. It also means that the pushovers and corporate plants over at the W3C need to stop adding crap to the standard that aids and abets these Bad Things.

  8. Improve security?? by Kwyj1b0 · · Score: 3, Insightful

    There are two ways to improve security - lock out the user, or educate them.

    Locking out the user is great - but it only works on NEW products, and if you don't have competitors. The reason it works well on NEW products is that the user isn't conditioned on what to expect. Remember, trying to change how people use their computer is an uphill battle. It works well when the do not believe they have alternatives.

    Educating the user is harder, but that is the real fix. You aren't improving security by saying 'As responsible devs, our software won't do what you want'. Instead, make a two minute video showing them how $technology is flawed, and make them watch it ONCE. Then, let the choose whether to block $technology or live with it. Because right now they get fed up with Firefox (NOT Java), and click the little blue e.

    And yes, it isn't a great hassle to keep using FF when you allow users to "click to allow $applet". But the pain is that I need to look at the little red icon in the address bar to permanently enable something. You might say that if I can't handle this additional step, I shouldn't be making a choice on whether to run an applet or not (but that is a bad road to head down). You could have just made a popup when I run an applet that says "Do you want to remember this setting?" - it doesn't fix the security problem, but the current solution doesn't either. At least this way, I don't feel frustrated at my browser for someone else's (Oracle, in this case) screw ups.

  9. Nice SNAFU by Mozilla by SpaceLifeForm · · Score: 4, Informative
    Here's the problem: Non-technical users are going to scream about the steps needed to allow the Java Applet to run.

    How to enable Java if its been blocked

    In order to protect you, Firefox has stopped outdated versions of the Java plugin from running automatically because of security issues.

    So, now, the lastest version of Java (7.45) is considered outdated.

    Absolutely brain-dead decision.

    --
    You are being MICROattacked, from various angles, in a SOFT manner.
  10. What's the big deal? by Anonymous Coward · · Score: 5, Insightful

    Oracle Java has ALSO decided, due to the persistent security problems due at least in part to having concurrent (i.e., old) versions installed (and the fact that the largest exploit kits have used Java as one of their main vectors for some time now, alongside Adobe Reader of course) to disable Java plugins in the browser by default in recent updates.

    So, what's the big deal? This is the correct decision from a security perspective. I can't remember the last time I saw someone on the World Wide Web actually USE a Java applet for good, rather than for evil. And I'd have noticed, because even after all these years, it still runs like an absolute dog. It's the kind of thing you might use on a local application (such as Minecraft, which is what I think probably most people who still have it installed use it for now, albeit they'd likely have the 64-bit version which wouldn't have a working browser plugin in a 32-bit browser anyway!) or an intranet site (which is your administrator's problem, to re-enable it for that site only, or to use a different browser for the web and the intranet, which you can totally do and is good practice).

    I've got many other criticisms about Firefox recently from a security and performance perspective - let's face it, it's just not the zippy, efficient browser it used to be, even relatively-speaking, it's lost its mojo and the security team have a reputation for having a slow, and fairly arsey, response - but this seems to be the right decision and they should be lauded for it. IE has also done it, as has Chrome.

  11. Oracle is now involved by SpaceLifeForm · · Score: 3, Informative
    They hopefully will convince Mozilla to back this out, and figure out a better UI for the user to deal with. A small red clickable icon that leads to more clicking is not going to fly with non-tech users.

    From Link:

    Donald Smith 2013-10-22 22:03:01 PDT

    Disclaimer: I'm in the Java SE Product Management team at Oracle.

    Just to add to my colleague in Engineering Joe McGlynn's comment #61 -- we're happy to help here however we can. We do frequently speak with mcoates, but are happy to plug into any other channels the mozilla team think would be worthy (as we seemed to somehow miss this one until it was too late I think we need more contact/channels). For example, I think we can help address questions related to the Java 6 (and Java 5, for that matter) updates as they are still supported and do receive updates along with the latest public baseline(s).

    As comment #50 notes, bugzilla is not forum software - so I'll leave it at that and send @bsmedberg a quick note and continue to try to catch up wit @coates.

    First I've heard that Java 5 and 6 are not considered dead yet.

    --
    You are being MICROattacked, from various angles, in a SOFT manner.
  12. Re:I don't understant the hate by knorthern+knight · · Score: 4, Informative

    > I don't get it why people hate Java applets so much they want them to go altogether.

    Because Java applets are a honking big security hole, and currently the most-often-used attack-vector to take over unsuspecting users' machines. See http://www.cvedetails.com/vulnerability-list.php?vendor_id=5&product_id=1526&version_id=&page=1&hasexp=0&opdos=0&opec=0&opov=0&opcsrf=0&opgpriv=0&opsqli=0&opxss=0&opdirt=0&opmemc=0&ophttprs=0&opbyp=0&opfileinc=0&opginf=0&cvssscoremin=0&cvssscoremax=6.99&year=0&month=0&cweid=0&order=1&trc=35&sha=d158a5520a2bc52f7443268daaab5851ced00564 for a list of recent problems.

    --

    I'm not repeating myself
    I'm an X window user; I'm an ex-Windows user
  13. Re:What need? by Splab · · Score: 3, Informative

    Java is needed to do banking in many places, the FF change gave me 30 minutes of "wtf?"; trying to work out why it kept complaining about insecure applet, when running newest Java had me perplexed.

    If I had an alternative to FF on Mac and Java, I'd ditch FF for this stunt in a heartbeat.

  14. Uses of Java applets by Anonymous+Brave+Guy · · Score: 4, Informative

    Must we have this troll comment every time someone mentions Java applets?

    Java applets are commonly used, as they have been for many years. According to this Chromium blog post from September 2013, 8.9% of Chrome users had launched something using the Java plugin in the past month.

    Among the common uses that get mentioned every time this discussion comes up are: public access to banking and government systems in various countries, games, user interfaces for devices (scientific equipment, network infrastructure, all kinds of examples), access to local hardware devices that aren't yet available via newer technologies, some popular teleconferencing and VPN software, and little demo graphics written by academics to go on their web sites a decade ago that are still just as relevant today.

    In other words, just because you don't use Java applets yourself or know when they're still useful, don't assume everyone else is in the same situation.

    --
    If you disagree, post your argument. (-1, Overrated) isn't your personal censorship tool for views you don't like.
    1. Re:Uses of Java applets by Anonymous+Brave+Guy · · Score: 4, Insightful

      Depending on who you ask, there are about 2.5B people using the Internet now. If we assume most of them use the Web and we assume that the pattern for Chrome is representative of the general population, that means more than 200,000,000 people used a Java applet at some point in the previous month.

      Even I am surprised by that, but in any case, it seems you and I have very different ideas of what "almost extinction-level rare" means.

      --
      If you disagree, post your argument. (-1, Overrated) isn't your personal censorship tool for views you don't like.
  15. Re:What need? by Anonymous+Brave+Guy · · Score: 5, Insightful

    If you are still developing/depending on applets, 1995 called they want their stupid ideas back.

    Hi 2013, this is 1995 calling. When your new shiny toys have the portability and performance and flexibility that we had nearly two decades ago, and developers can write software using them with a reasonable expectation that it will still be working in 5 or 10 years (or even 1 or 2 years) without needing constant maintenance, then you get a vote. Until then, we'll keep our "stupid" ideas, because they've been helping us get useful work done since before you were born. Kthxbye.

    --
    If you disagree, post your argument. (-1, Overrated) isn't your personal censorship tool for views you don't like.
  16. Bad Things require Better Alternatives by Anonymous+Brave+Guy · · Score: 3, Insightful

    You do understand that without those Bad Things you so hate, there probably wouldn't be a Web worth saving, right? Someone has to pay the bills, and if you're not going to pay for content, you're not going to accept advertising, you want full privacy and security when using services you're not paying anything for... Who is going to write the cheque?

    I hate DRM and spammy ads and privacy invasions as much as anyone -- more that most, probably, given that I really do give up on some things most people accept because I refuse to support the intrusions. But still, we live in the real world, and you can't just wish Bad Things away without proposing Better Alternatives. BTW, "everything I want should be free and unencumbered" is not a viable Better Alternative.

    --
    If you disagree, post your argument. (-1, Overrated) isn't your personal censorship tool for views you don't like.
  17. Re:Is it time to fork Firefox yet? by Anonymous+Brave+Guy · · Score: 4, Insightful

    The number of support e-mails in my inbox this week from those users suggests that they aren't too happy about being "defended" in this way.

    --
    If you disagree, post your argument. (-1, Overrated) isn't your personal censorship tool for views you don't like.
  18. They do have a VM by DrYak · · Score: 4, Informative

    I guess they can even run javascript inside the same VM, so a unified approach.

    In fact they already have a VM they use for javascript (the whole -Monkey family), and their VM is even able to compile to native. Not only JIT, but even more so for specially crafted javascript called ASM.js (it standard Javascript, that only use those features which translate nicely into machine code: doesn't use dynamic typing, only uses safe typing, etc.) enabling near-native speed for some code.

    In theory, it should be possible to create a process which recompiles java byte-code into ASM.js and feeds it into the VM for nearly-native speeds.
    In practice, Java is a huge pile of complicated mess, and thus lots of applications end-up being highly dependent on Sun/Oracle/IcedTea Java and not run well on any other implementation (like GCJ), mostly because of missing classes or whatever. So you'll end with something as good at running Java as currently Gnash is at running Flash - more or less works broadly on theory, but breaks on lots of specific cases. Given the current market for java (bazillions of inhouse applet in businesses) it is going to be hard to test every case. Whereas Gnash only breaks on some stupid casual games and video player for cute kittens (and pr0n), a Java-reimplemented-in-the-browser would probably break business intranets and core business applications.

    The only possible solution, is implementing only the bytecode execution itself (transcode Java bytecode into ASM.js - like pluging GCJ to LLVM to emscripten to odinmonkey, for example). Ant then re-use the opensourced classes from IcedTea and co. But then you're again running the original java with all the original bugs, only on a different platform. If a bug in the official libraries enable an attacker to steal encryption keys from other apps, this is still going to put your bank's e-banking applet at risk, no matter if said applet runs on an uncrashable Mozilla OdinMonkey VM or the official Oracle JVM.

    And Google recently developed an efficient sandbox called NaCl, so why not follow them? They could even run Java inside NaCl to add another layer of security.

    NaCl isn't really a sandbox. It's only a special way to package executable native code, with limitation of what said code can do. It's some security restrictions (NaCl applications can only run a subset of the whole API available to normal applications and aren't allowed to run some instructions), stacked on top of the pre-existing Google Sandboxes (each into its own process)

    Even if you use a JVM running as a NaCl application, you've only partially solved the stability problems (JVM crashes less, and when it crashes, it doesn't take the whole browser with it). You haven't solved security (obscure stupid java classes leaks encryption keys or password due to bad design).

    Also note that NaCl is completely against Mozilla's approach and will never get implemented. Mozilla simply doesn't want binary code, because it's limiting (NaCl only runs on x86 and ARM), and still a security problem (even if it's much better then ActiveX, you're still sending executable code from the internet into a browser).

    Still PNaCl is probably where everything will be heading: this time it's not the actual binary which is shipped, but the previous step in the compilation process - the LLVM bytecode. Google can still compile it into NaC (and run better security checks at compile time). And mozilla can use it to compile it with emcripten into ASM.js. It's now much more portable (you could run it on MIPS for exemple), and much more secure (when compiling ASM.js, memory access are translated into read/writes to/from an array instead of random memory writes).

    Hell, they could even run the complete browser inside NaCl, so Firefox would run on Chrome too :)

    If you want, you can even use Firefox to run one of the virtual machines written in Javascript, boot a virtual Linux distribution and run Chrome on it.

    --
    "Sufficiently advanced satire is indistinguishable from reality." - [Tips: 1DrYakQDKCQ6y52z6QbnkxHXAocMZJE61o ]
  19. Re:you don't need flash by JDG1980 · · Score: 3, Informative

    just like PDF.js can replace PDF plugins in browser

    pdf.js is garbage. I never thought that anyone could write a PDF reader worse than Adobe Reader, but they did. It butchers at least half of the documents I view – other open source alternatives such as Sumatra handle them just fine. And even when it does work, it's incredibly slow, and the rendering is crap quality.

    The Mozilla team really needs to give up on the experiment of PDF via JavaScript, and add a working viewer that uses native code.