strange copy in my address bar

anonymous_at_discussions.microsoft.com
Date: 07/28/04 

Date: Wed, 28 Jul 2004 13:44:41 -0700

Hi,After I sign in to msn I get by1fb.bay1 in front of
msn.Then everywhere I go it is allways in front of every
site in the address bar.Its like something is tracking
everywhere I go.I have run a norton scan and I also have
AD ware and have run their scan and it is still there.Is
anyone else getting this when then sign in.I also get a
different one when I am in yahoo.This happened on
different computers.Does anyone have any advice.Thanks
margaret