I have had mine for almost a year now. I picked up one of those intercooler fans that clips onto the back of the 360. So far no problems. I have had 2 games freeze up on me( gow and cod). I restarted the box and no problems since. Oh ya I think I got a disk read error on H2 once but I cleaned the drive and no problems since.
Hey BTW how is the infamous 12V mod performed?