Its currently for MIDs, which means x86 based computers. However, Ubuntu is working on a PDA version for ARM processors like the Kaiser. I believe that it will first be released for the Sharp Zauruses, which already run Linux, and therefore are easy to port to. I do not know if it will or CAN be ported to the Kaiser, as the Kaiser is closed source hardware, so it would have to be completely reverse engineered. Even if Linux could be made to run, it would lack ANY specialized drivers for the Kaiser, so it would probably be slow and buggy.