This is fixed now in intrepid. It will search for the proxy based on the apt.conf configuration, the synaptic configuration and the gconf environemnt (and of course the http_proxy environment).
** Changed in: update-manager (Ubuntu) Status: Confirmed => Fix Released -- Ubuntu 'do_release_upgrade" doesn't work behind proxy https://bugs.launchpad.net/bugs/115388 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs