sudo versus su environment?

[Chris <list.hurschler@gmx.de>]

Hi,

I have a strange problem.  I have sudo setup so that I can sudo apt-get, to 
update for instance.  In one network when I have an http_proxy set in the 
environment apt-get update can connect when I use su, but not when I use 
sudo.  env shows the proxy set correctly, but apt-get cannot seem to connect 
when sudo'ing.  Any sugestions?

Thanks
-- 
C. Hurschler