New blu-ray dvd's won't play properly

Latest version is v071101a. you can find it here and burn to disc.
Or contact LG for a disc.
As a work around you might try to switch between PCM and bitstream and see if that helps.

http://www.blu-ray.com/firmware/firmware.php?id=17

Since the LG combo platform doesnt suppourt many HD features if you are thinking about buying new Blu-ray player (since the format war is over) I would go with the PS3 - best value for the price, is already set up for adavnaced features such as internet connectivity (with auto software updates), even if you dont use the game features.