I think this is due to a problem between nm-applet and dbus. Attached is a log from running nm-applet from a terminal and the errors it displays.
** Attachment added: "nm-applet log" http://librarian.launchpad.net/4888089/nm-applet-problems.txt -- [edgy] Intermittantly displays continual prompts for keyring access. https://launchpad.net/bugs/37348 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs