I apologize ahead of time if this was answered already in a previous thread. I have set up ubuntu 14.04 server. I am trying to install a GUI on it and when I accept how much space the GUI will take, I get a full screen of e: failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/ the rest of the address varies from line to line. What have I done wrong and how can I fix it? Thanks in advance for your help.