For automatic update, ensure that the following is in /etc/apt/sources.list deb http://plex.r.worldssl.net/PlexMediaServer/ubuntu-repo lucid main If this fails, a manual install may be necessary… Browse to http://www.plexapp.com/getplex/ and select ‘LINUX’ and then right click on the relevant architecture and copy link address. This will be the URL and file used in the wget command below… cd…