I recently sent the MBP in for a repair of a defective mute key (goodness bless those quick turnarounds) and when it came back, the repair sheet noted that they had replaced the logic board (having to do with the 8600m gt I'm assuming). Anyways, before I sent the computer out, I made a CC clone of my hard drive, and after restoring on the replaced machine - my temps have spiked up to 55-60C on normal use/flash browsing. Using the same fan speeds, I was getting 50-55C before I sent the computer in. I know that certain thermal pastes require a curing period. Is this the case with the TIM used with the MBPs? The fan spins up a lot more often than it did before I sent it in. Thanks guys!