I opened my box today and tried to clean out the DVD-drive a bit with some canned air. Still no GTA though. But the experience I got from it will probably come in handy when I eventually install the new DVD-drive I ordered. It worries me that the one I ordered is also a Thomson drive, but right now I just want to play some GTA... It still seems to play DVDs alright, even double-layered ones. Maybe I'll take the game over to that other guys place and confirm that it's just my box and not a disc-related issue.