Do you mean the add-ons bar at the bottom of the Firefox windows? It was removed during the last update. In some cases leaving lots of icons homeless. Go to the '''''[https://addons.mozilla.org/en-US/firefox/ Mozilla Add-ons Web Page]''''' {web link} (There’s a lot of good stuff here) and search for an add-on bar. Many of us are using '''''[https://addons.mozilla.org/en-US/firefox/addon/classicthemerestorer/ Classic Theme Restorer (Customize Australis)]''''' {web link} Restore squared tabs, appmenu, add-ons bar, small button view and more on Australis UI (Windows/MacOSX/Linux + Fx 29+). This will restore many of the things the last upgrade took away.