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Major Snow Leopard Bug Said To Delete User Data

inglishmayjer was one of several readers to send in the news of a major bug in Apple's new OS, 10.6 Snow Leopard, that can wipe out all user data for the administrator account. It is said to be triggered — not every time — by logging in to the Guest account and then back in to the admin account. Some users are reporting that all settings have been reset and most data is gone. The article links to a number of Apple forum threads up to a month old bemoaning the problem. MacFixIt suggests disabling login on the Guest account and, if you need that functionality, creating a non-administrative account named something like Visitor. (The Guest account is special in that its settings are wiped clean after logout.) CNet reports that Apple has acknowledged the bug and is working on a fix.

3 of 353 comments (clear)

  1. Re:Oh. by Kamokazi · · Score: 4, Informative
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  2. Re:I don't want to feed the trolls but... by gilgoomesh · · Score: 5, Informative

    As far as I can tell, from reading this on other sites, the reproduction involves:

    * Machine that was upgraded from Leopard to Snow Leopard
    * Already had the Guest account enabled on Leopard.
    * Logs into Guest account (not a remote login but a local, physical login)
    * Is hard-booted (after crash, power failure, or power button) from Guest account back into Admin account.

    Despite a combination of these steps, people are finding it hard to reproduce. So it's the sort of issue that could fall through the QA cracks.

  3. Re:Oh. by Charles+Dodgeson · · Score: 5, Informative

    our Apple drones are so upset over this, they are planing to buy another Mac, just in case one got erased.

    That's me!

    As an Apple fanboy, I find this bug very embarrassing. From what I read, I do fall into the "very small number of users" that this bug could catch. That is, I've had a guest account before upgrading to Snow Leopard. I guess that I've never been hit by this because I've never logged out of the guest account and then logged in to an admin account. In fact, the guest account and the admin account are both very rarely used. (My account is a "regular" account.)

    The only reason that I've enabled the Guest account is because my Macs (that's plural, so you see I really am a fanboy) have a "phone home" system in case of theft. And I figure that having a guest account will allow the thing, if stolen, to stay in use longer before getting wiped.

    As for back-ups, I don't really think the Time Capsule is something I'd recommend to most users. Instead just use Time Machine with an external drive. I do think that Apple should be given lots of credit for Time Machine. It really makes back-ups so easy there is no excuse for anyone not to make back-ups.

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