I got my iMac back on Monday from the apple store (http://forums.macrumors.com/showthread.php?t=130384) and ever since then the fans seem to be constantly running at the same speed. It never gets quiet, and sometimes it even gets a little louder. Could the repair have affected this? Or did I just get used to my pc laptop again? I used it for two weeks and it was much quieter than this. Or maybe I'm just paranoid now? allison.