You need to check for Norton updates with every Firefox release. Norton usually releases an update on the same day as a new Firefox release. Run LiveUpdate as many times as necessary to get all updates - restart your system as required. *Norton general discussion - http://community.norton.com/t5/Norton-Users-Discussion-Forum/ct-p/nis *Always check for Norton 360 information here - http://community.norton.com/t5/Norton-360/bd-p/Norton_360 (read 5th item for update to 20.2) *Always check for NIS information here - http://community.norton.com/t5/Norton-Internet-Security-Norton/bd-p/nis_feedback (read 4th item down to update to 20.2) ------------------------- Other- You need to update some plugins. Out of date plugins make any browser installed on your system vulnerable to attack. *Check your plugins - https://www.mozilla.org/en-US/plugincheck/ *Adobe Shockwave for Director Netscape plug-in, version 11.5 **http://kb.mozillazine.org/Shockwave **Download, save, close browers, run installer you downloaded - https://get.adobe.com/shockwave/