This is a very simple guide that will teach you how to Install Ubuntu linux on the PS3 and to get more out of your powerful system. Firstly, Download the Official PS3 Ubuntu Linux 7.04 Feisty Fawn ISO file and burn it to CD (It is recommended you use a download manager).
WARNING: These next operations WILL ERASE EVERYTHING on your PlayStation 3. Be sure to back up the data that you want to restore later once you've formatted the PlayStation 3 hard drive (i.e. your game save data, configuration data, etc.).