Here is what I have done so far:
- Read the thread Firefox 15 Support for Norton Toolbar
- Updated Norton Internet Security - see image
- I have run LiveUpdate and rebooted when told to. In addition to that I have rebooted for other reasons as well
- I have uninstalled Firefox 15.0.1 - although I did not remove my personal settings when I uninstalled it
- I have installed a fresh copy of Firefox 15.0.1
- I reran LiveUpdate just now (no updates)
And I am still getting this:
Now what?