Rated 1 out of 5 stars

Nice ext on pre-3.0 versions of FF, but simply does not work on my latest FF 3.0.

Add-on installs, can add button to toolbar, but it does nothing when clicked and shows no history for closed tabs.

Please fix, I love this button and hate keyboard short-cuts.

This review is for a previous version of the add-on (3.0.2). 

Try 3.0.3

Could you please try version 3.0.3, located here...http://code.google.com/p/uctb/downloads/list
or you could wait until it is approved for AMO.