I have been getting the same thing. Weve only had this PC about 6 mos, brand new. Problem started couple weeks ago. We don't use this PC a lot for web surfing. When we do we use pretty standard sites, yahoo, airlines, researching some stuff, no gaming websites, no kids using it.
We have mccaffe, have run a full scan. Downloaded the free spybot, ran the utilities. Get the flying spaceship in Mozilla Firefox, ie & google chrome. Think we are going to have to wipe the pc & reload everything. Really sucks.