I have a Macbook (Late 2007) and I use iStat Pro to monitor my computers internal behavior. In my particular case its not even needed because anyone who knows anything about computers, and notebooks specifically, knows that it is eating up the cpu. iStat Pro shows that my "System" is ALWAYS using ~35% of the cpu whereas the "User", me, is only using ~1-15%. Because of this, it shows me that my CPU is ~175ºF and because of that, my fan spins ~6200 RPM. All in all my notebook is louder than a jet engine and I don't do anything with it to warrant that kind of behavior. I am a college student and I use applications such as iTunes, Safari and Word. I don't do anything with any kind of demanding applications. How do I find out what is using my CPU in the "background" I guess and fix it? Or shut it off? This is going to be very bothersome once I go back to school in 2 days and have to sit in class typing notes on a rocket ship taking off for Mars. Please help. Thanks.