Well, until you figure out what is sending these queries, you should keep the computer off of the internet (just in case it is a spambot).
And I recommend using a real-time active protection program. It doesn't drag down a system any at all. Just scanning the files is often not enough. An active protection program would probably tell you if the queries were malicious.
Try scanning with Malwarebytes and SUPER Antispyware (just Google them for the downloads). If there's anything funky, they should tell you. And if you don't want to pay for a real-time protection to find out if that would fix the problem, just download a free version of AVG, Avira, Avast, or Vipre, etc...even if you download a trial version of something, it will run long enough to tell you if you're infected.
I'm sure a pro will come in here and ask for a bunch of logs to further diagnose it, but for now, that is my advice. Keep it off the net, and run some anti-malware through it.
Best of luck to you.
Edited by keyboardNinja, 30 December 2009 - 04:48 PM.