I had the same pop up yesterday , just after I went to a site shown on here. Scared the heck out of me. So offical looking! Darn warnings kept popping up constantly. Then I ran a scan with my virus/spyware, found there was a virus, and that was it. Put it in quarantine for me, and then I had it removed. So far, everything seems okay. Hope so, I'm not wise on this stuff.