Rated 5 out of 5 stars
Googlebar Lite 4.7.3 on Firefox 3.5.5 (guess on 3.6.* as well) running straight and smooth. The best of Googlebar (...) cannot be missed :)
As far as I'm concerned, even though its advantages, I wouldn't have installed this add-on without its 'Toggle Google Lite Toolbar' toolbar button, and I really appreciate this commodity for saving screen space.
Googlebar Lite is one of those unavoidable Firefox add-ons, in my opinion. Very nice achievement.