I updated to firefox version 27.0 and my Norton toolbar disappeared. I checked in Firefox's addon manager and it said that the Norton toolbar is incompatible with version 27. I ran liveupdate and restarted my computer, but the problem was not resolved. The toolbar has been incompatible for several weeks now, and after updating to Firefox 27.0.1, the Norton toolbar is still incompatible. The toolbar is version 2014.6.2.3 and I am using a Windows 7 pc.