my computer recently downloaded something that i'm not sure if it is a virus or legitimate. it says it is a virus blocker and looks like a blue shield with a white stripe through it. the logo is located in the bottome right hand corner, near the volume adjustment. about every 5 minutes or so a message pops up saying that it has blocked a virus, and around 5 more minutes later an even bigger pop up opens telling me it has completed a scan and removed something like 30-40 viruses and to upgrade my anti spyware. both of these continue to open even when i have no programs open. i cannot uninstall them, or even find them in the menus. i will provide a few pictures later when i have some more time.