I love Black ops's singleplayer. Can't resist it. So i get on today, and when it finishes loading up any SP mission, the PS3 freezes, and i have to restart it. It works fine in multiplayer, but not on SP. Or Zombies. What the hell is wrong with it?

PS i am hardly ever on here, so i may not respond for a while. This explains me not replying to any messages you may have sent.