The fans seem to be turning on all the time when they never used to. Whirring and whining sounds. I've never had a quieter computer until recently. I don't know if its the WD scorpio black I installed recently. I checked my istat pro and it's reporting 50% user cpu and about 40% system and it's doing nothing but one or two tabs on google chrome opened - a brower I recently went back to this week. I dont think that's the problem though as it started to get noisy before then. Any ideas? The fans used to hardly ever turn on unless I was playing a dvd/cd or doing some heavy audio work or ripping.