my brother's having a major issue regarding gears of war 2 and the error- disc unreadable-while playing campaign or multiplayer. ive heard many say its more than likely his xbox hardware about to give in soon, that the lens isnt working or to try to replace the game.

heres the situation though, my brother bought his xbox(arcade) 3 days before gears of war 2 came out, and up until then he was playing fallout 3 nonstop without a hitch. so hes playing on a brand new xbox with new lens and hardware i suppose, and when gears 2 comes out, we both get our copies from the same place, we both start a system link horde mode and within 10 minutes, he exits the game with a disc unreadable error. we think its a one time problem and try campaign. same problem occurs.

so we decide to return his game and exchange it for a new one. we get home, play campaign and within half an hour, same problem. since he just bought the xbox, we decide to exchange it for a new one. we get home, hook it up and an hour in, same problem. he tries my cd and i try using his, 10 minutes pass before he is exited out by the disc unreadable error. we decide to try returning the game one last time. SAME PROBLEM.

so in the end, we returned our game 3 times, and we are about to return his xbox one last time. maybe we just got really unlucky... does anyone out there with an arcade system have the same issue? im guessing this is more than just an arcade issue though.
-problem occurs online too, extremely annoying when u add that ontop of it taking half an hour to get a game and then you get one and it throws you out!!!