Forum:Menu Freezing

Hey, I was wondering if anybody here could help me with this.

Every time I press "online" in the main menu, the game freezes. I can still quit via the PS3 crossbar, and that goddamn robot still makes noise at me in the background, but I can't do anything. So yeah, can't play online. I looked it up, and a few people have had this problem but nobody helped them... Any ideas?