Need help - Blu-Ray drives - what to do.

[x01]

Ok...

I bought a Blu-Ray drive for my PC:
Liteon DH-401S BR Player

I installed it (plus all the software: Latest PowerDVD, AnyDVDHD - updated the firmware)
Tried to play Iron Man. Worked fine for first 30 mins or so, then it started skipping... then I discovered the whole second half of the movie couldn't even be read by the drive.

What I can't figure out is if this is:
*A faulty drive
*A limitation the drive has (can't read some discs)
*A faulty Disc
*Some setting or problem with my system.

I don't know what to do really. I have also heard that the Iron Man disc was recalled? I guess it could be that too. Unfortunately I don't have any other Blu-rays to try at the moment.

Does anyone know if Blu-Ray drives just can't play all discs? If that's the case I would prefer not to even bother with one.
Or maybe there's a better drive I should get?

:specs
Duo Core 2.0ghz
8800GT
2GB RAM
Windows XP