I got a new xbox360 and MW3 game for this past christmas, i do not play it heavily or leave it on for long periods of time. So you can believe my dismay when i started playing call of duty today and downloaded the new content update, after i downloaded the new content the game wouldnt play, saying "disc read error" or "unrecognized disk" no matter how many times i eject and then reload the game or turn on and off my system, the game wont play!!! this is very frustrating especially since i just spent money on add on content that i cant even experience. I NEED A SOLUTION! PLEASE!