Are you saying that you were using NetworkManager on interfaces listed in /etc/network/interfaces?
NetworkManager does not use /etc/network/interfaces. I think you (the German user) are describing a bug in gnome-system-tools. If you right-click on the network icon in your GNOME Panel, and select "About", does it say "NetworkManger"? Otherwise, it appears this bug was actually solved and is stale. ** Changed in: network-manager (Ubuntu) Status: Confirmed => Needs Info -- Passphrase set and stored is not what was entered https://launchpad.net/bugs/43450 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs