Hi all, I bought my first mac this summer (iMac rev.B). Things have been going well, until lately. I noticed that my fans weren't running very often, so I downloaded a CPU temperature monitor from ministat. It was registering close to 200 degrees, and the computer would shut down after about an hour. I took it to Apple and they replaced the logic board and the power supply - thank you warranty. I got it back to school today and the temperature meter is still at around 185 degrees after just booting up. What's wrong and what do I do now?? Is the temperature meter right?