Another casualty...
I must be one of the unluckiest Mac users ever.
I knew that there were problems with Firewire and Panther 10.3, so I waited for 10.3.1, where Apple said those issues were addressed.
I had to remove my 200GB drive from my G4 Dual MDD because it kept shutting down from the heat (it was right next to the heat sink--<sarcasm> Great design Apple!</sarcasm>). I put it in an external case, worked with a few files, everything was going nicely and *poof* 104 GB of video lost (well, maybe not *poof*, but the spinning beachball of doom, finder crash, tried shutting down through open terminal window, had to cross fingers and force reboot---bad things). I wish I NEVER upgraded to Panther!!!!!