Comment 41 for bug 398128

I largely agree with Aaron. It is imperative to improve on the current situation before the next FF release. So, solution #1 would be the best to pursue in the short term.

In the long-term (i.e. *after* the next FF release), I would opt for a refinement of #2. From my use of FF, it is quite common to only want to enter the master password (e.g. to quickly access your email) and skip any other password prompts for later. So, a more flexible solution would be the following:
   * "Cancel" for master password prompt would cancel all prompts for which you have stored logins. This prompt should appear before any other prompts for which you have no credentials stored.
   * For the remaining prompts that have no stored logins there will be an additional "Cancel All" button. The number of prompts that will be canceled with this button should also be displayed (as Aaron proposes).

Unless the user wants to enter passwords for only some of the non-master password prompts, this solution is almost* optimal in terms of required user effort. Here is a table of usage scenarios and the associated user effort:

    | master password
    |----------------------------------------------------------------
    | | enter | do not enter
---------------------------------------------------------------------
    | enter | 1 master passwd | 1 click
    | all | + | +
    | | 1 passwd per other prompt | 1 passwd per other prompt
  p | | (minimum effort) | (minimum effort)
  a |----------------------------------------------------------------
o s | enter | 1 master passwd | 1 click
t s | some | + | +
h w | | 1 click or passwd | 1 click or passwd
e o | | per other prompt | per orther prompt
r r |----------------------------------------------------------------
  d | enter | 1 master passwd | 2 clicks
  s | none | + | (minimum effort + 1 click)
    | | 1 click |
    | | (minimum effort) |

*The "almost" is because of the extra click in the last cell of the table.