The symptom sounds like SPYWARE.
What tools did you try to find such?
Bob
Icons
Every time I close out from the internet all of the desk top icons will lock the computer up when I click on one of them. I have to restart the computer.
I went to help and followed the directions and deleted the shelliconcache but it didn't help.
I started in safe mode and run the scan disk but the computer locked up.
Everything is OK until I get off the internet and click the icon to disconnect.
Any help out there?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic