I have a 360 elite and Halo 3, since i bought it I have played Halo 3 on xbox live with no problems.but recently when i do, i go into matchmaking, load a certain playlist (i have tried them all) and it will find players, load the whole game, and right when the game starts and i walk 5 feet, it says game over I won, then it will not load another game, or show me any other players until I turn my xbox off and try again. I am using a high speed connection. Sometimes it will let me play (rare) but when that game is over, it wont load another? Any ideas? Thank you for any help.