Alright - I have a 1.2GHz MacBook running X.4.11. There is very little not vanilla on this mcahine.
The machine will play CDs with no problem, however, when I put a commercial DVD in to watch a movie, DVD Player opens, but the nothing else happens. The disk will not mount on the desktop either. Disks will eject on demand.
Why can't I watch a movie or see the disk on the desktop?