As a disclaimer, I'm not complaining about the heat that my MacBook Pro normally generates, as I'm versed well enough with this forum and the MacBook Pro to know that it is somewhat standard for the case to heat up during use to dissipate heat. That said, I noticed several things happening with my MacBook Pro lately. First, at least once or twice per day, the fans will start to get really noisy. Much noisier than they normally do when they spin up the full sub-6000rpm speed that they are capable of reaching. I took the MBP to an Apple Retail Store and had them run the standard hardware test but nothing unusual was found. They tried to listen for unusual noise, but naturally the Mac didn't act up while I was in the store. After taking the MBP back home, the issue started again. I've reset the PRAM and SMC, uninstalled Fan Control, updated iStat Menu, and even tried installing smcFanControl, but none of it has had an effect on this intermittent issue. I also compared the temperature of my Mac (as determined by iStat) to the normal operating temperatures specified for my Mac on the Apple support website. With only Safari (no flash), Adium, and iPhoto open (Divvy, TextExpander, smcFanControl, Little Snitch, Droplr, and iStat in background), my Mac averages about 45 to 50 degrees celsius, which is 10-15 degrees hotter than specified on the support page. I've also seen my Mac get as hot as 95 degrees celsius when playing a game like Diablo 3. EDIT: I did switch off the automatic graphics switching feature, and it actually seems to lower the operating temperature by about 8 degrees. I have upgraded the memory in the Mac to 8Gb total and I've swapped out the default hard drive for a 7200rpm Seagate hybrid drive, but unsure if that has anything to do with anything. So my question/concern is this: is my Mac getting hotter than it should be? If so, could that be an indication that the fans aren't working correctly? They do show that they're able to reach their top speeds when needed. Any other advice on how to handle this?