If you use Digsby to handle your IM accounts, your PC might be getting pimped by bundled crapware AND/OR "authorized" web crawling as it runs in the background.
http://lifehacker.com/5336382/digsby...-to-make-money
From Digsby's TOS:
15. USAGE OF COMPUTER RESOURCES.
You agree to permit the Software to use the processing power of your computer when it is idle to run downloaded algorithms (mathematical equations) and code within a process. You understand that when the Software uses your computer, it likewise uses your CPU, bandwidth, and electrical power. The Software will use your computer to solve distributed computing problems, such as but not limited to, accelerating medical research projects, analyzing the stock market, searching the web, and finding the largest known prime number. This functionality is completely optional and you may disable it at any time.
Damn!
