We have an Ubuntu 12.04 LTS machines that is giving errors when I try to run updates.
Specifically, I am getting a load of errors like this:
W: Failed to fetch http://packages.medibuntu.org/dists/precise/non-free/i18n/Translation-en Something wicked happened resolving 'packages.medibuntu.org:http' (-5 - No address associated with hostname)
I tried to ping packages.medibuntu.org, and it returns:
ping: unknown host packages.medibuntu.org
It therefore seems to me that sometime in the past, packages have been installed from there, but it has 'gone away'.
Is that diagnosis correct?
If so, how do I identify and 'fix' those packages? Do I have to carefully go through the whole output from 'apt-get upgrade' and uninstall each one? Hope not, but if that's what's required, then okay.