Intruder!
I am getting annoyed by this: ChatZum.com
I imagine it got in when doing a download. I probably missed unchecking a box that 'allowed' it in.
I have tried everything I know to rid myself of it and it currently sits and owns all it surveys in my address bar. Tried slash and burn, deletes galore and just about to have ago in the registry.
I'll let you know how I get on.
PPP
GOT IT! It was in registry - now gone. A lot of this sort of stuff is integrating itself on computers these days. Like Norton they are pains.