I hit this problem with Lucid. As suggested by David, the workaround is to set http_proxy as root (sudo su) before running apt.
-- package flashplugin-installer 10.0.22.87ubuntu2 failed to install/upgrade over proxy https://bugs.launchpad.net/bugs/362970 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
