Booting Knoppix from USB 2.0 Pendrives?

David Eliasson asks: "Ive been trying to make Knoppix boot on my Pendrive without success. Booting from USB hard drives seems to work, however, so I guess this drive could do the trick, but it doesn't support USB 2.0, making it rather slow. Does anyone have a better experience with this? I would like to use the local harddrive as a huge AFS-cache. Imagine carrying around your whole OS, and necessary data on an encrypted pendrive! If users have problems, then you just plug in the drive and reimage it. Isnt this a great idea!?"