I experienced a really nasty lockup of Jaguar. Only the cursor was mobile. I ran Diskwarrior and it tells me the desktop file is too damaged on one of my 2 internal HardDrives and to reformat it. Unfortunately this is the bigger of the 2 (120Gb vs 10Gb) and held my Panther install. I am backing up everything non-system to CDs. What concerns me most is what do I have to do to secure all my preferences, email etc and things I have probably forgotten, that is probably buried in invisible files. Can anyone suggest the best method and what to look out for? Is this a case of going through everything with a notebook in hand recording installs, serial numbers, networking, settings etc?