Everytime I connect to the internet, a popup tells me that I have a worm or trojen or some sort of high risk virus on my PC, I have an updated version of Avast on my PC (Avast is not the popup) and it finds no virus on my PC. The popup is filled with advertising for a free Antivirus scan. It sometimes redirects me to pages offering spyware scans etc. I think that this is a hoax. Its irritating too. help would be highly appreciated on removing this pest from my PC.
I also run a-squared free and a Sunbelt firewall (these are not the culprets of the popups either as I installed these after the popup attack began)