I've recently installed GTA: San Andreas and I've noticed after playing for a while, about 30min-3hours heat waves would appear on the screen. Right when this happens I close down the game, but now I'm becoming reluctant to run the game anymore in fear of blowing up my graphics card. I've tried leaving the case open and adding an additional fan, though the heat waves don't go away. I'm pretty sure that 38C isn't hot enough to overheat a card, well actually the 38C is the temperature which is shown after I exit the game, because I don't have an in-game temp monitor. Nevertheless, given another 15C I still don't think that's hot enough to overheat. I'm using a Geforce 9600 GSO and I was running the game at 1440x900 at high quality. Oh, and if it means anything I overclocked my CPU from 2.8ghz to 3.67ghz, but I don't think the heat from the CPU (33-55C) would be affecting the GPU. If you have any solutions or possible causes, I'd appreciate if you would share with me. Thank you very much, Alex.