Comment 120 for bug 195698

I would like to echo that this bug is highly annoying. I am a system administrator with several HTTP auth protected Cacti tabs open *always*, and as such I have the "Restore all tabs" option enabled. The bug which asks for the master password once for every password protected tab has been around in every Win32 Firefox version as far as I can remember, up to 3.0rc1 which I'm currently running, independent of the number of plugins installed. It's always asked once per protected tab, and usually in more or less random order depending on how fast the 401 replies dribble in.

I would definitely suggest blocking the entire application once a single Master Password dialog is showing. While I have no inside knowledge of the Firefox code, I would expect the stored password management code to always tunnel through a single entry point when retrieving a login, which would be an excellent place to block with a plain old mutex if the password dialog is already open. That's probably oversimplifying it, but I can't imagine the real solution being much more complex than that.