I recently upgraded to Panther. Now, I can barely get my DVD drive/software to play DVDs. I know that these discs are not defective because they work in other drives. I really hope that my DVD drive isn't defective. I suspect it is a software issue because it always did work spotty, and now it is exhibiting similar behavior, just all the time instead of some of the time. When I try to watch LotR:TTT (fresh out of the box!), it just spits the disc back out after a minute or two. With other DVDs, the disc mounts, but DVD Player hangs/crashes. I deleted DVD Player's preferences but that doesn't seem to do it. What do I do?