A very common situation, especially in these days of session restore blessing and multiple tabs, is that many pages need you to authenticate at the same time. Every time I fire up my Firefox, with say 10-15 tabs, I'm greeted with around 6 overlapping dialogs that need me to write my username and password. (Sometimes a modal dialog on another screen is blocking the input of whatever dialog I'm currently seeing, but that's another bug report.) Somehow I feel that this is neither the most user-friendly way to handle the situation, and nor very secure. Somehow Firefox should merge some of these authentication dialogs (maybe all that are really for the same domain - but coming from different tabs) or at the very least pop them up in some sensible order/priority. Some new thinking might be needed to make this kind of situation less awful when *lots* of people, especially corporate users with their intranets, face this daily. Maybe tab-specific modal dialogs would save the problem. Unfortunately such dialogs do not exist on any platforms I'm aware of.

Definitely a dupe.

Are you sure it's a dupe? I would like the situation to improve when there are simultaneous prompts from *different* sources as well.