You've got something major running in the background. Do the three finger click, ctrl-alt-del and see what's running. Look at the Applications and the Processes tab. Applications are what are running that you specifically start like IE or email. Processes are started at boot up.

If you find something that looks suspicious, go to Start, Run, and type msconfig and look at the Startup tab. Start unchecking unfamiliar items and reboot.

Good luck,

Telephony facts, analog/digital explained.
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I think computer viruses should count as life. I think it says something about human nature that the only form of life we have created so far is purely destructive. We've created life in our own image. - - Stephen W. Hawking