There seems to be an upstream bug already opened for it: #646354 (https://bugzilla.gnome.org/show_bug.cgi?id=646354).
** Bug watch added: GNOME Bug Tracker #646354 https://bugzilla.gnome.org/show_bug.cgi?id=646354 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/838820 Title: proxy authentication option missing in 11.10 / gnome3 Status in GNOME Control Center: New Status in “gnome-control-center” package in Ubuntu: Confirmed Bug description: There is no proxy authentication option under System Settings -> Network -> Network Proxy. Looks like a Gnome3 upstream bug. To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/838820/+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