I had a problem with Tiger's DVD player closing on its own.
I finally took off Tiger and went back to 10.3.9. I find Panther much more stable for doing real work.
I had numerous issues on my G5 imac including the fans spinning up to max, losing the mouse, where I had to plug and unplug, safari malfunctions, frequent slowdowns and poor networking with my Linux and Windows boxes.
The DVD player was also closing frequently on its own.
Very happy to be back to Panther.