I spent forever (90 minutes) on the phone yesterday with Microsoft. My only consolation was that the repairs would be free. If they try and make you pay complain, ask, request, plead, beg, hell, demand that they comp the repair. It is the least they can do for putting out such a crap product.
Seriously though if you're having issues, have returned the game, and tech support isn't helping bring up the fact that you know others that have been offered a console repair.
Also, USATOPGEAR, my disk does not work and was "Hencho en Mexico" I think the prob my be the console.
[Edited on 09.16.2010 2:58 PM PDT]