Created attachment 141536 [details]
Screenshot showing keyring between NetworkManager and its pop-up list

Gnome 2.26.1 on Ubuntu 2009.04
NetworkManager Applet 0.7.0.100

Here is what happened:
) I logged into my account (which uses the default Gnome desktop).
) I clicked the NetworkManager Applet to connect to a hidden wireless network.
) Suddenly the keyring dialog decided to open and somehow managed to insert
itself between the NetworkManager's window and the pop-up list I was about to
choose from. (Screenshot attached)
) From this point, all of Gnome was frozen, I could only move the mouse. Print
Screen and even CTRL-ALT-BACKSPACE did not work.
) Switching to the command line with CTRL-ALT-F1, I did not find anything
suspicious.

This might be a race condition or focus bug. I did not managed to reproduce it.
It is a bit similar to this bug:
https://bugs.launchpad.net/ubuntu/+source/vinagre/+bug/372422

Bonus:
I ended up running "killall Xorg" which restarted another Gnome session, this
time connecting without even asking for my password!!! Why was keyring asking
for my password even though it obviously did not need it?

Good luck,
Nicolas Raoul.