Because of the dangers of a boot CD resetting and getting at all of my data, I created an encrypted image for all of my documents that I can mount and use as my ~/Documents folder. This makes it much more difficult for a thief to get at my stuff (he may have my machine, but he shouldn't be able to get to my info). I don't worry about this too much on my home machine, but it makes me feel better about carrying my iBook around. YMMV. Mike