Im having somewhat of the same problem. Approximately every minute or so the little red circle with the white x in the bottom right hand corner, (which i usually do not see at all) pops up and says your computer has been infected, download anti-spyware by clicking here. I dont know what this is, but it is annoying. My homepage is now google everytime I log in instead of what it used to be. I change it back, but then I log back in and its back to google. Does anybody know what this is or how to fix it?