A while ago, I had a problem of my computer's Q6600 running at 59C idle. However, today, I disabled the auto fan control in the BIOS and temps at idle have dropped around 10C (coolest core is now 43C). When I felt the fins of the heatsink right after turning off the computer, they were hot (but not BURNING hot). Is this a sign of a bad heatsink or bad seating of the heatsink, or just bad design of the auto fan control? Also, is 49C a safe idle temperature for a Q6600?
Finally, anything else I can do that won't void the warranty of my Q6600 to lower the temperatures? (I'm a lazy man, it's my excuse for not buying a new heatsink!)