hi, i am having trouble with playing the game. every time i try to play, the whole xbox360 freezes up. I am able to play all of my other games but this one. I am able to go to the main menu but as soon as i try to start any match on any type of play list, it freezes. I have used other profiles and the game works perfectly fine, but when i try to use mine, it always freezes. i have tried my profile on my friends xbox and it works with all games, but when i put in my copy of gears of war 3, it freezes just like on mine. my friend doesnt have gears 3 so i cant test it to see if the problem is only on my disk. I could really use some help.