Rated 4 out of 5 stars

Simple tweaks that are mostly what youd expect to be standard in FF but arent, and im most impressed with the ability to move and shrink the menu dropdown to the search bar. Too much space is taken by that and the window minimize/expand/close, luckily another addon fixes that called Hide Captions Titlebar Plus

btw theres a pretty huge conflict between UI Fixer and another addon called TotalToolbar which you get at mozdev.org explained in my post http://forums.mozillazine.org/viewtopic.php?p=13188677#p13188677 (its a workaround for a bug where you cant save custom toolbars, and does similar things to UI Fixer generally)

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