Norton Vulnerability Protection 11.3.0.3-5

Tried downloading Firefox 22.0 when it was first released and got this message. "Some of your add-ons won't work with this update, and will be disabled. As soon as they are made compatible, Firefox will update and re-enable these add-ons:" Norton Vulnerability Protection 11.3.0.3-5.

I have read the stickies here, but since the problem was fixed by Symantec on June 24, well before I even tried downloading Firefox 22.0 and my version of NIS is 20.4.0.40, why am I still getting this error message when trying to download Firefox 22.0?

Research here seems to indicate that it has something to do with a Norton Toolbar, but I do not have it nor do I want it.

Win XP SP3.