Comcast Norton Security Suite & Toobar Not Working in FF 17 or 18

Am currently running the Comcast Norton Security Suite & FF 16.  If I update to FF 17 or 18, the Nortol Toolbar Add On will not work.....tried live update/etc.

 

Any suggestions???

 

Also, the Norton "update me now" or autodetectpkg.exe doesn't locate any Norton software.....though it's running on my PC?????

 

HELP :smileyfrustrated: