Glad to see I was not the only one. I would love to scale back the usage. Give the app 60 - 70 % of my cpu. I would like to leave it running in background but I need to weigh helping humanity or saving my pc ...

That's what it's supposed to do. You're donating your spare CPU cycles to help crunch the massive amount of data that this project has.

THe reason your computer is cool most of the time is because it's not using the CPU very much. Now, with this project, the CPU is being used to its fullest, thus you'll notice it's almost always at 100% and thus will generate a bit more heat.

If you don't want it running all the time, you can always change your device profile so it runs only certain hours of the day. You can also have it run only in screen saver mode. However, no matter when it runs, you CPU will be running at 100% capacity.

- Rick Alther

I found a solution that is quite satisfactory - and best of all free. its called threadmaster, and here is the link: http://bednorz.uni2.net/anyland/threadmaster/threadmaster.htm
not the best-looking piece of software (controls through commandline and registry), but works like a charm, especially for the price.
only for win2k and above, though.

If you have an Intel Pentium processor (p6 or p7) it will slow-cycle if it gets too hot (activates the PROCHOT signal and actually slows the CPU down until it cools off). If you have an AMD processor - good luck. Sorry, but K6, Athlon don't have that feature. Best bet is to limit crunch time, install another fan, or not run at all. As for downloading threading programs and such (esp ones that mess with the registry) I am very wary. Caveat emptor.