WINFIX

On several occasions now, while browsing in Internet Explorer, a message will appear on the screen announcing something about the need to be aware of spyware. It gives the viewer some options, but no matter what you do (I clicked onto the X in the upper right-hand corner) a bunch of WINFIX ads or applications appear. Nothing I try to do can get them off. When I finally shut down, I find that Winfix has been installed on my desk top. Has anyone else had this problem?