The password save prompt box does not appear on logging in to certain password protected webpages; is there another way of adding their passwords to Firefox sync?

Question

Dear Firefox tech supporter,
I am Currently running:
Firefox v6.0.2;
Windows 7 fully updated at 19 Sept 2011 15:45 GMT;
Norton Internet Security 2011 (using Identity Safe) fully updated at same time as Windows 7;
Extensions to Firefox-
Norton Toolbar 2011.7.1.3;
Symantec IPS 3.1;
Add to Amazon Wish List Button 7.1;
Minimap Addon 0.3.13
Plugins
The usual suspects from Microsoft, Adobe, Wacom, Apple and Google, all of which are checked and no updates currently found.
With webpages such as <https://shop.avanquest.com/members/?company_rs=51>, PayPal and Windows Live e.g. after correct login details are entered into the online form and login is performed successfully. The "key" symbol does not appear to the left of the "awesome bar", neither does the password save pop up box and so the login details for the site cannot be saved in Firefox sync.
This is not specific to https secure sites, as I have been able to save the passwords for several https secure sites and conversely, I have been unable to save the passwords for some http non secure URLs. I have ensured that, whilst trying to enter a page or site into Firefox sync, it has the only tab open.
There does not seem to be a way of manually entering website details (URL, User Name, Password etc.) into Firefox Sync; how can I save the password details for such sites?
Thanks in advance for your help,
Chris Morris

Answer 1

Make sure that you do not run Firefox in permanent Private Browsing mode.
*https://support.mozilla.com/kb/Private+Browsing
To see all History and Cookie settings, choose:
*Tools > Options > Privacy, choose the setting <b>Firefox will: Use custom settings for history</b>
*Deselect: [ ] "Always use private browsing mode"
*Tools > Options > Security: Passwords: "Remember passwords for sites"
See also:
*http://kb.mozillazine.org/User_name_and_password_not_remembered
*Saved Password Editor: https://addons.mozilla.org/firefox/addon/saved-password-editor/