Mine has been going on for a while, but has progressively gotten worse. At first it was just a freeze once every 2 months, then once a week (Bout every 5-6 hours in game), now its every game. I start a matchmaking game. I play for a few mins. Suddenly all the sound dissappears or gets really muffled like the space mission in campaign. 5 mins later it either freezes or it crashes and pops up with the disc unreadable. Weird thing is I've reinstalled it with no errors twice and this still happens. Help? My xbox is not valid for warranty either as it has been fixed by a friend for red ring. Silver tray, white box. [Edited on 06.15.2011 9:44 PM PDT]