Error after apt-get

[Niklas Gunnäs <niklas.gunnas@infos.se>]

Hi

I'm trying to find out what happens after I do a apt-get update,
apt-get dist-upgrade to a freshly installed Skolelinux 2 system. After
the update is complete, I try to access the internet and I get this
error message:
"unknown proxy host webcache". Seems to be something wrong with the
DNS? Anybody else had this error message? It seems wrong not to be
able to update your system to the latest package versions. If I leave
the system as is after a fresh install everything works.

I've googled on the error message and I can't really find anything
pertinent besides a reference in an online manual, which does not seem
to be complete since there's no info how to solve the problem.
http://developer.skolelinux.no/documentation/IKT-bok.en.html

Best regards

Niklas