[quote name='ToadStoolPorridge']I know what you're talking about. There was some section where a handful of people would initiate one sequence before another by accident and it would completely mess up the game. Unfortunately, I'm not sure if they've released a patch. It seems like a few isolated incidents, so it's probably safe for you to pick this up, though.[/QUOTE]
That bug existed in the original PS2 version. And it's only in God of War II. You can google what the bug was, if you feel like you'll have a problem... it was sort of doing a puzzle out of order and not let you complete it.
Otherwise, the Collection itself has no issues at all with the porting, and no additional bugs have been created with the porting to the PS3.