I know Bing is the favorite of @Ken Anderson but it is a true virus--once it gets onto your computer, you cannot get it off. It embeds itself into your other search programs. A frequent search topic on the net is "How do I get rid of Bing?". It has infested Firefox and I cannot get rid of it. It has done this before, but I have always been able to remove it. Not this time. It doesn't even appear on the program list, but it is everywhere.