get firefox to remember all passwords (even the ones not supposed to)

Some crappy websites and quite a few banks have a tag in their forms to prevent firefox to offer you to remember the password. There is a mod for a javascript file inside firefox and/or an extension available.

http://cybernetnews.com/firefox-remember-passwords/

http://www.smart-roadster-club.de/off-topic/mozilla/extensions/activate-autocomplete/