2013-03-04 upgrading over SSH http://askubuntu.com/questions/8884/whats-the-risk-of-upgrading-over-sshhttp://serverfault.com/questions/321520/ssh-connection-lost-during-server-upgrade-how-to-reconnect-to-processhttp://serverfault.com/questions/321724/ubuntu-server-upgrade-over-ssh-hang