I don't know whether I want to see my wget using libproxy.
Anyway, I added the line mentioned in comment #4 to my /etc/sudoers (note, that putting that into /etc/sudoers.d/keepenv didn't work because #includedir /etc/sudoers.d is missing).
Now it works as pre-lucid, i.e. I can update my system using export http_proxy=college-firewall; sudo apt-get update, ...
I don't know whether I want to see my wget using libproxy.
Anyway, I added the line mentioned in comment #4 to my /etc/sudoers (note, that putting that into /etc/sudoers. d/keepenv didn't work because #includedir /etc/sudoers.d is missing). college- firewall; sudo apt-get update, ...
Now it works as pre-lucid, i.e. I can update my system using export http_proxy=