NIS 17.5.0.127 deleted my FF 3.5.7 addons

I'm running XP SP3 on my PC. Sometime Monday I received 17.5.0.127 and I lost my Norton/Identity Safe toolbar. It is still there in the background, but can't auto fill anything, and my memory isn't good enough to get along without that feature being active. After the upgrade all of my addons (less 2) but including 2 Nortons addons were removed. The toolbar is visible and working fine in IE8, but IE8 rhymes with hate, which is how I feel about using IE8. HELP!