When I sat down at my desk this morning I noticed the fans on my MBP were making a lot of noise. It seemed sort of odd since the computer was pretty much idle (one Finder window, one Safari window). I started looking around and discovered my CPU temperature was 182F and my fans were spinning at 3300 RPM. Then I noticed in Activity Monitor that Safari was using 100% of the CPU. It wasn't hung or acting weird and I surfed around to a few sites. When I quit Safari, the CPU temperature starting dropping dramatically. Within 2 or 3 minutes the temperature was at 117F and the fans were under 2000 RPM. I just recently switched back to Safari from Firefox and now I'm not sure I trust it. Have you guys seen anything like this before? For now, I just close Safari when I'm not using it.