Never heard of that happening. Then again strange things happen all the time.
If you still want to check out the machine :
Follow these instructions carefully
Contributed by Warez Monster
Download ALL 4 programs and update them as soon as they are installed, this is very important, except for Hijackthis!.
Ad Aware SE Personal
Spybot Search and Destroy
Microsoft Windows AntiSpyware
Follow these steps
Delete the prefetch folder C:\WINDOWS\Prefetch, this folder will come back on next reboot.
Delete all cookies and temporary internet files in the control panel.
Go to Start, run, type msconfig, go to startup, disable everything except your antivirus, click apply, dont reboot yet.
Download Msconfig Cleanup below
Run Msconfig Cleanup after you unchecked the items you were told to uncheck and recheck, click "Select All", then click "Clean up Selected", then click "Quit".
Now run each spyware program 1 by 1. Running all 3 at the same time will slow most systems down.
When each program has finished scanning, remove everything.
For Microsoft Antispy, after it has finished scanning, some items will/might be on ignore, you will need to select remove unless the program is valid such as VNC Viewer, etc.
Now go to the recycle bin and delete everything that is in it.
When finished with the scans, reboot, and go into Safe Mode and run these scans again, remove everything they find, and then reboot back into Windows in normal mode. You dont need to run Hijackthis! yet.
Then run HiJackthis!
Save the log, copy and paste the log on www.techist.com
Do not attach the log, copy and paste always. This will make things go much faster.