Clear out your temp folders first (what O/S, btw?)
Run Adaware and Spybot to catch any mal-ware.
Running a virus scan wouldn't be a bad idea, either. If you don't have any virus protection software, try AVG from
www.grisoft.com
If don't have one already, it may be a good time to put up a firewall. Sygate is a good free one.
Hope this helps
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