Only if the Comcast "deal" with Norton is directing you to the download or updating you to the newest Norton version. The Norton toolbar that gets installed into Firefox was made compatible with Firefox 6 on the day that Firefox 6 was released. According to this post on the Comcast forum *http://forums.comcast.com/t5/Security-and-Anti-Virus/Posting-questions-pertaining-to-the-COMCAST-Norton-Security/m-p/769035 if you click on "link" near the bottom in the paragraph beginning "''In order to honor his request, please follow this '''''link''''' to the Other Norton Products board...''", you will be taken to the following forum at Norton where you can ask your question: *http://community.norton.com/t5/Other-Norton-Products/bd-p/other '''If this reply solves your problem, please click "Solved It" next to this reply when <u>signed-in</u> to the forum.''' ------------------------- Not related to your question, but... You need to update some plug-ins: *Plug-in check: https://www-trunk.stage.mozilla.com/en-US/plugincheck/ *Adobe PDF Plug-In For Firefox and Netscape: [https://support.mozilla.com/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox] *Next Generation Java Plug-in for Mozilla browsers: [https://support.mozilla.com/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]