Each time i resume my notebook after a suspend to disk-cycle the connection to WLAN hangs with the following message:
I tried to fix this via network-manager with adding the hook at the checkbox "Alle Benutzer dürfen dieses Netzwerk verwenden", but this did not help at all.
The point is, that after resuming my login keyring wants a authentication with password again. But this behaviour can be easily changed with the tool seahorse.
(Installation in debian with: apt-get install seahorse)
After starting seahorse choose "File -> New" and you will get the following dialog:
At the end you have to delete the old keyring (the one with the password):
After all this steps you should not see this legitimate-popup anymore...