Has anybody else had 'GRAW' lock up on them to the point where they need to hard reboot their 360? I've had it lock up 11 times since Wednesday night - single player campaign and multiplayer. Everyone I've talked to on Live seems to have had it lock up at least eight times or so. I'm wondering if I should call Microsoft to exchange my 360, or if it's a software issue that causes this? I should mention that 'Fight Night' hasn't locked up at all. I should also mention that this has happened within the first ten minutes of starting up the 360 - so it's not a heating issue. The system is horizontal, and the power supply is on a hard wood table. It sounds like a fairly common problem - and yet - I can't seem to find much information about it online. Most disturbingly, I read somewhere that the 360 'GRAW' team stated that there would not be any patches or fixes for the console game.