Hi there, this question is pretty simple. I have a 2009 pre-unibody MacBook that has a Core2Duo inside, and it's making a *lot* of noise. Actually, the fan is running full blast, and we all know how annoying this small fan can be at 6200rpm. Strange is that the CPU isn't loaded to any extent (about 15% right now), and reported temp (from iStat Nano) hovers around 58 degrees. Ambient temp is a rather cool 20 degrees, and AFAIK internal fins have been cleaned, however running with fan full on for extended periods of time surely clogs it faster than usual. In fact, by reducing fan speed to about 4200rpm, temp only climbs to 61 degrees. I'll check the fins again when I find some time. My question is, what's the max safe temperature for a C2D to operate at? I know it has an auto-throttle mechanism to avoid damaging itself while running hot, but of course I's like to avoid hitting that wall if I were to use a fan control software. Would a higher temp in any other part be responsible for this fan speed increase? By comparison, my current MBP has an i7 inside that maxes out fan only when reaching 80 degrees. I empirically determined the machine starts to act erratically when CPU reaches 90 degrees.