As noted in other comments setting the 'system wide proxy' did not work for me, even though I can see the env vars set correctly. The following fixed my problem with 'flashplugin-installer'
sudo gedit /etc/wgetrc # You can set the default proxies for Wget to use for http, https, and ftp. # They will override the value in the environment. https_proxy = http://WWW.XXX.YYY.ZZZ:####/ http_proxy = http://WWW.XXX.YYY.ZZZ:####/ ftp_proxy = http://WWW.XXX.YYY.ZZZ:####/ # If you do not want to use proxy at all, set this to off. use_proxy = on -- Synaptic, update-manager, apt-get and wget should share proxy settings https://bugs.launchpad.net/bugs/283500 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