Firefox 23.0.1 on Windows 7 Ultimate hangs when I try to click on "Options" next to any addon in the addons menu.

I am unable to access the options for any of my addons in Firefox 23.0.1 - clicking on "Options" causes browser to hang. Also, most of my addons do not appear to be working.
Addons installed are:
Adblock Plus
All-in-One Sidebar
DownloadHelper
Forecastfox
printpdf
Sage
Tab Mix Plus
Troubleshooter
Adobe Acrobat - Create PDF
Adobe Contribute Toolbar
Norton Toolbar (disabled)
Norton Vulnerability Protection (disabled)
In addition, my Norton toolbars are apparently "incompatible with Firefox 23.0.1", yet the Symantec website states that they are now compatible with this version.
Updated the Adobe Acrobat plugin to version 11 as it is listed as being vulnerable, and this appeared to be completed, yet the version in Firefox still states 10.1.7.27 and is still being marked as vulnerable when I check to see if my plugins are up to date.
Not sure if any of these things are related.
Tried uninstalling and reinstalling Firefox on 23rd August with no change.

Hello elenisophia, any luck if you [https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems#w_turn-off-hardware-acceleration Turn off hardware acceleration] ?
also for the Norton toolbar, see : https://support.mozilla.org/en-US/questions/969109
thank you

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