I have a range of machines at home running Mythbuntu/Ubuntu. The main BE/FE is Intel C2D x64. FEs are CD x32, C2D x64, P4HT x32, P3 x32, dual quad Xeon x64... All live happily together, no sweat. Main FE/BE: http://www.youplala.net/linux/home-theater-pc/ Nico