You must update Norton toolbars on their internet security products with their Live Update. A new version of Norton's toolbars are released for each new release of Firefox. The release by Norton usually occurs on the same day as a new Firefox release. *Read all of the following and check the versions of the toolbar add-ons to be sure that they are the correct version and that they are enabled. *http://community.norton.com/t5/Norton-Toolbar-Norton-Identity/Firefox-17-Support-for-Norton-Toolbar/td-p/853416 Also, be sure that the toolbar is selected to be displayed - click the Norton toolbar to check it if it is not checked *See - https://support.mozilla.org/en-US/kb/navigation-buttons-missing *Also see - https://support.mozilla.org/en-US/kb/customize-firefox-controls-buttons-and-toolbars