Voice Search button not working....?

[Lawliet]

Hey guy last night holding the search button busted out the voice search just fine, but today I noticed that holding the button doesn't do anything.

I think my girlfriend might have changed the setting or something but I could not find anything in the setting that'll let me reassign keys (except the keyboard shortcuts).

I really liked having voice search a button away (great while driving) so I'd appreciate any help that'll remedy this problem.

Thanks guys.