I've played this game up to Mars and I would really like to keep playing after giving $30 to redbox and $40 to Gamestop, but every time I set destination to ANYWHERE on Mars and hit launch, it counts down 3, 2, 1.... FREEZE. No sound, no movement, nothing. I let it sit there for 6 hours yesterday and nothing happened. I'm using a PS3 with plenty of space. Never had any problems with any game before. I've made sure the disc isn't scratched- it looks pristine, nothing in the disc tray. What the heck is going on? I can load everything else available to me. This is really frustrating because every time this happens I have to turn off my PS3 and go through that tedious disc check. Please help!