I looked a while and could not find this bug before reporting mine. I would not have at all if Michael Pardee did not point it out. So I will include my report and work around from 142780.
On Ubuntu 12.04 only. (Does not happen on 14.04) After upgrading the network-manager-gnome packages (includes libnm-gtk0 libnm-gtk-common) from 0.9.4.1-0ubuntu2.3 to 0.9.4.1-0ubuntu2.4 Disconnect, Edit and under VPN Connections Configure VPN and Disconnect VPN are greyed out and unelectable. You can no longer change passwords for VPN or WiFi, or define new static IP configurations. As 0.9.4.1-0ubuntu2.3 is no longer available in the repos, I had to roll back to 0.9.4.1-0ubuntu2, which meant rolling back Unity Greeter as well. This was initially found on my desktop, but replicated in a VM I had with 0.9.4.1-0ubuntu2.3 still running. Going directly to 0.9.4.1-0ubuntu2.4 still gives the same problem. This has also been reported on Ubuntu Forums. http://ubuntuforums.org/showthread.php?t=2266443 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager-applet in Ubuntu. https://bugs.launchpad.net/bugs/1424119 Title: Edit Connections...now insensitive by default in network manager's menu Status in network-manager-applet package in Ubuntu: Confirmed Bug description: arno@arno-1000H:~$ lsb_release -rd Description: Ubuntu 12.04.5 LTS Release: 12.04 arno@arno-1000H:~$ apt-cache policy network-manager-gnome network-manager-gnome: Installé : 0.9.4.1-0ubuntu2.4 Candidat : 0.9.4.1-0ubuntu2.4 Table de version : *** 0.9.4.1-0ubuntu2.4 0 500 http://fr.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages 100 /var/lib/dpkg/status 0.9.4.1-0ubuntu2 0 500 http://fr.archive.ubuntu.com/ubuntu/ precise/main i386 Packages Might be after upgrade to network-manager-gnome 0.9.4.1-0ubuntu2.4, the item Edit Connections... at the bottom of the network manager's menu is now insensitive i.e. grayed out, therefore user cannot configure his/her connections as indicated in http://docs.xubuntu.org/1204/internet-networks.html#network-connections workaround : launch /usr/bin/nm-connection-editor to display the network connections window and have access to the settings. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1424119/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp