On my machine I have spysweeper, mcaffee firewall, NAV. I finally got rid of a nasty adware by Odysseus Marketing.
Last night I ran spysweeper again and surprise surprise I had several adware found on my machine. I have no clue how they got there. Now that you mention Eastern Europe block, I do go to some news/sports sites.
I am still trying to find out how I got the adware installed.