Panther bugs so far: iSub doesn't mute with the mute key (iMac 17" FP) - Just the Pro speakers mute. Disk Utility has no preferences option - you can't set defaults like you could for Disk Copy in 10.2. A firewire harddrive will still appear on the desktop even if you have the finder set not to show harddrives. A FW disk appears to be in the same category as CD/DVD/iPod. The only place to set the default web browser is apparently within Safari. I can see this as being an additional place to set it, but not the only place. [/list=1] Although some might call some of the above list features.