Comment 3 for bug 192641

Yes the information did not look correct. The http_proxy variable shows only "http://proxyname:port/" instead of "http://username:passwd@proxyname:port/".

This is the case when I press Alt+F2 and launch gksudo xterm.
In case if I use gnome-terminal and then launch gksu xterm , the output is correct, i.e. "http://username:passwd@proxyname:port/".

Note that I haven't manually set up the environment variables. I have only set up the variable in gconf by System-->Preferences-->Network Proxy.