I am using Ubuntu 11.10 with Firefox 9.0.1 with a couple of addons. Ocasionally when I start Firefox two prompts asking for the password appear. Any solution?
I have the same problem and fiddled with the extensions.
When I remove the "Firefox Ubuntu extension", the password is only asked once. I personally don't care about Ubufox extension (see here for what it does).
Hence, until the issue is fixed, a solution is to disable the extension.
If I open an old Firefox session where I had multiple tabs open that required credentials (which are stored in the master key store) I not only get 2 of those prompts, but sometimes 5.
The problem is simple really. A tab requests stored credentials from the key store and Firefox notices that you haven't provided the master key yet, so it prompts you to provide it.
Why, after so many years, this behavior still results in multiple, stacked password prompts is beyond me. I would assume it has to be like that due to security concerns.