This Gist is a guide on how to setup your computer at CERN with Ubuntu 14.04 LTS. Last tested by myself on a brand new computer on 18/11/2014, proof tested by @Alea88.
With the kernel upgrade from 3.13.0-45-generic to 3.13.0-46-generic AFS stops working: https://bugs.launchpad.net/ubuntu/+source/openafs/+bug/1423151
Type this to check your kernel version: