As far as I remember Google is the default address bar search. But sometimes a software you install, changes this value without your consent or by mistake (to Conduit, or whatever).
To switch back to the good old Google do the following:
- Open firefox
- Type about:config in the address bar and hit the Enter key (If you receive a warning message, confirm to continue)
- In the search bar that will appear type keyword:url
- One value will appear, double click on it.
- A pop up box will appear with a URL (internet address) of some type. Change whatever is there to- http://www.google.com/search?&q=
- click ok
and that’s it.