This could be a feature of an add-on. Could you check to see whether you have any unrecognized add-ons and disable (or remove) them. In particular: orange Firefox button ''or'' classic Tools menu > Add-ons > Extensions category Then restart Firefox and watch for the toolbar, which hopefully will not appear. You also could paste a list of your extensions here for review. You can copy them from this page: Help > Troubleshooting Information It's the second table, which appears below the Extensions heading. Please note that some add-ons installed by other software on your computer may not have a Remove button; to remove these, you could check the Windows 7 control panel (Programs and Feature) or the options/preferences of that other software.