I have several downloaded files that I think are viruses...I have removed them from program files, but they seem to come back. Symptoms included internet explorer windows saying I had viruses and telling me to download their spyware software. I would get popups balloons from my toolbar telling me a Trojan horse virus was detected, etc...and my homepage was a security homepage. After following all instructions from your thread, I have noticed less symptoms- but I am attaching Combofix, HJT and AVG anti-spyware logs. AVG antirootkit found nothing. thanks for your help.