Password Manager & FF 17

I downloaded and installed FIrefox 17 last night, and also installed the latest update to my Norton 360.  Everything seems to be working OK except for the Password Manager.  When I use Internet Explorer, Norton still fills in the ID and password for those sites that need it, but it's not doing the same on Firefox.  Instead the Login Assistant drops down and shows me the ID and password for the site I'm on.

 

The problem is probably with Firefox since I'm not having any problems with Internet Explorer (Windows 7), but just in case I'd like to know if anyone else had the same problem and what they did to resolve it.