User blog:Dr. Feelgood/True Vault Hunter Mode issues

So I recently beat Borderlands 2 and want to play it again on true vault hunter mode. However, every time I try and do it, the game freezes. Not right away, but a little bit after the first scene. You know when after Claptrap discovers you, he says "I can finally get my central processer repaired so I stop thinking out loud! I wonder what its like to have a bellybutton?" The game goes fine until the end of that sentence. Claptraps audio cuts out just before the end of "bellybutton," and he stays in one spot waving his arms around. I can run around, but only for like 30 seconds before the game and system freeze. Is this an issue with the disc, the save file, the system (PS3)?