Think your Snow Leopard woes are finally over? Don't go logging into that Guest account, then. A flurry of reports have surfaced around the web explaining that even an accidental login to one's Guest account within Snow Leopard could lead to mass deletion of all user files on the primary account, and when we say "mass deletion," we mean "mass deletion." The problem goes something like this: if one clicks on the Guest account after upgrading their machine to OS X 10.6, and everything hangs, there's at least a decent chance that all of your data will be evaporated whenever you surf back over to the main profile. Apple has yet to address the issue (at least publicly), but we'd probably recommend disabling Guest accounts on your rig(s) until all of this gets sorted. You know, unless you actually enjoy watching your data vanish.