As previously posted, this is some other software, not your browser. Having had a problem with this and other issues on a number of machines I manage, I went out and found adaware from lavasoft. (
http://www.lavasoftusa.com/software/adaware/) Cleaned several computers and all are now clear of these sorts of problems as well as many of the pop up add issues that also come up.
Basically, if a machine exhibits this sort of behavior it is because of spyware. Get Adaware. Get rid of the junk. Cry if you are using some 'free' software that installs this junk as it's way of staying free.