In FireFox.
If it is a search engine in the search bar is Babylon this is how I removed it
This assumes you already tried : -
a) Control Panel Uninstall
b) FireFox check add-ons, extensions, etc, and removed
c) Run Anti-spyware
d) Run Anti-virus
e) Run a Registry Cleaner
But it is still showing in the address bar when searching
These tips are from FireFox and not my own but worked for me
FireFox Help page in description.
How to remove a search engine.
http://support.mozilla.com/en-US/questions/901118#answer-281976
If you have the Babylon Toolbar, follow the procedure in the Uninstalling add-ons article, in particular the section on uninstalling extensions and themes
babyon removal:-
Here are the copy and paste commands
In FireFox address bar: about:config
In Filter box: keyword.URL
In Filter box: Babylon
Right click each and select reset.
Then close: about:config
And reboot to make sure it is not used
After I would
a) Check