Rated 3 out of 5 stars

problem solved! it seems that when the menu bar is active you also get the title bar. to hide the title bar you have disable the menu bar. I'm not sure if this extension caused the problem, but it is solved now

This review is for a previous version of the add-on (1.4). 

Rated 1 out of 5 stars

this is garbage! after I installed this and deleted it again I still have the title bar in FF4. And I can't make it disappear, even when I choose 'tabs on top' mode

This review is for a previous version of the add-on (1.4).