No Auto Fill

I just upgraded to Firefox 17.0. The Norton Toolbar has all of my passwords, but isn't auto filling. When I open IE8, it auto fills. Why not in Firefox? The toolbar reads, "Vault Open." When I click on Login Assistant, the window opens up, displaying my username and password for each site, but no auto fill. Is there an option I haven't set? In fact, in the options, I have the box checked to auto fill; but, it isn't doing it. Help!