My MB is about a month old now, and have since spent several hours tinkering and working with it. I've also been slowly migrating my work stuff from Entourage/Outlook to my Mac units from my IBMs and last night, this included importing all my mail files (about 3000) into Mail. The a/c was on, my MB was perched on a Coolpad, on my lap, and with me on the bed (favorite workplace ) Only Skype, Mail, Entourage, Dashboard, Finder, Airport and Bluetooth were running as far as I could tell, and about 5-10 mins into the importing process, the MB's fan began spinning like crazy. I opened my IStat Pro Widget and this is what I saw: CPU temp almost at 90 deg C?! Exhaust spinning at over 6 thousand rpm?! Man, is this normal? And the noise of the fan is pretty unnerving as I've never had heat issues like this in the Thinkpads I've used before :slanted: I removed the MB's UNIEA cover, and place the unit on a chair directly in A/C's wind path, but the temp only went down by 2 degrees. But I let the import process finish, and just let the MB take the heat. After that task was done (about 30 mins), the MB cooled down to normal and worked ok naman. Fyi, I have a MB 2.16 Intel core duo, w/ 2G of RAM, and a 120G HD Any insight into this would be appreciated, including any thoughts on the data showing on IStat Pro... thanks!