Hey all, suddenly DVD Player 4.6 running on tiger (10.4.3) won't play back some DVD's that I've burned using Nero on the pc. they play fine in version 4.0 on panther, and they used to play fine in 4.6. Any ideas?

Never mind :-), I installed the 10.4.3 update from the software update menu, and now I just downloaded and ran the 10.4.3 combo update from the apple support site, and it seems to have fixed the problem.