Well, I purchased a new 2.53 ghz, 512mb video card Macbook Pro and recently got into World of Warcraft. I have a question, however. Using the dedicated graphics card, I'm playing WOW with all the settings maxed out. When I first start up the computer, the games runs between 50-78 fps. After 15-20 minutes of continuous playing, however, the game starts to chug along a little bit, dropping to about 25 fps for a few seconds, before returning to the full fps. This pattern happens about once every fifteen seconds-- 50 fps, down to 25fps, back up to 50. I think it has something to do with system heat, but I'm not sure. I have iStat installed, and it's reading 171 F for the CPU temp, and around 150F for GPU temp. Is this strange performance normal? Is there any way to fix it? Any help would be greatly appreciated.