For those people that say Forza doesn't have the ability to break an xbox, just because it didn't happen to you doesn't mean the game is ok! My 360 isn't that old and hardly used, yet the very first race on forza crashed it. I reset, played for bout 5 mins and it crashed again.
Third time upon crashing, the 360 failed to turn back on except for the red lights... Luckily it didn't break, it turned on the next day. Since then I have given it about four more chances and each time the game has stalled. The issue cannot be heat as stalling can take place in less than a minute of being switched on.
There is no point in making a game that pushes the boundary too far, they should never have sacrificed stability for slightly better graphics. I will simply never buy a forza again, but think myself lucky that my 360 didn't need repairs.