Hey, I've got a MBP and currently am running at 73C on the CPU, 63C on the GPU while gaming online (World of Warcraft). During play, I will notice a significant loss in performance, including jerky cursor movement and jerky framerate. I currently have a cooling pad underneath my notebook running at this temperature. Is this normal, or would this be something I would need apple to take a look at? I'm not quite sure what is a "normal" temperature I should be seeing, but I don't recall it getting quite this hot when I first got the notebook. Can someone provide some feedback on this? It would be greatly appreciated Also, as far as system performance is concerned...is it good to format/reinstall the mac os every year or so? Thanks.