[Admin - while it is of great interest to many members to discuss issues involving Panther since its release, please let's not get too off topic - issues regarding Panther which have at least some relevance to Logic are OK, otherwise, we have the OT list for exactly this type of thing] > Thanks, Clive. Great and informative link! I'm using a Firewire 800 > drive > for recording audio, but I don't know if it has "Oxford 922 bridge > chip-set > with firmware version 1.02". Anyway, I'll back up everything from the > Firewire drive to dvd before upgrading to Panther to see what happens. If you're using a Firewire 800 drive, it has an Oxford 922 chip in it as far as I can tell. Two FW 800 drives I recently got from OWC both have version 1.02. It turns out 1.05 is the current release, but it had just come out in September and I doubt most manufacturers rolled it into their production yet. I've had no trouble myself, but... 1. I made sure the FW 800 drive was off and disconnected while doing the upgrade. 2. The trouble evidently starts at boot time, so as long as you don't boot with it connected, you should be fine. (I've rebooted many times and not had a problem. I still think it has to do with the reboots during the Panther upgrade.) 3. Several manufacturers have patches for the drive's firmware on their sites. This should fix the problem entirely. (Unfortunately, the patches use Java and the Panther upgrade doesn't upgrade Java properly so I can't apply the patch yet. Apple's working on it.)