Firefox: Remember new passwords without prompting

Solution 1:

Hacking Firefox to Always Auto Save Password Without Showing Notification Bar:

1. Close Firefox
2. Edit nsLoginManagerPrompter.js with notepad which is normally located in C:\Program Files\Mozilla Firefox\components\

3. Replace the entire lines 642 to 711 with the code below:

   var pwmgr = this._pwmgr;
   pwmgr.addLogin(aLogin);
   

Now whenever you login to any website, Firefox will auto save the site, username and password to the login manager WITHOUT showing the notification bar.

Note: even when you enter the wrong username or password, it will still be saved.

Source

Solution 2:

This DOES still work in Firefox 3.6 - 4.0+, it's just not in the same place as shown in the picture.

Using Firefox 4.0:

Edit nsLoginManagerPrompter.js which is normally located in C:\Program Files\Mozilla Firefox\components\.

Replace the code from lines 800 - 869 with:

var pwmgr = this._pwmgr; pwmgr.addLogin(aLogin);

Save and replace original file.

Et voila!

Saves passwords and doesn't prompt.