So the other day I was playing my God of War Collection disc and ran into a problem. While I was playing, I noticed that as I progressed in a part of the level, some parts hadn't loaded. When I start up the system, it sometimes won't read the disc inside. When I place the disc in the system, it will sound like it's reading it, but then nothing. It reads sometimes, but for the most part, it doesn't. I'm assuming something is wrong with the laser in the disc drive. What do you guys think? The system is still under warranty so I may just send it in, but I would rather not have to if I can fix it myself since God of War III is right around the corner.