I've downloaded Kubuntu install CD and have been trying. But no matter which option I choose - e.g. install / install-powerpc64 / oem / oem-powerpc64 / and other varieties I get one of two results: either it leads to a white screen with some text that is overlapped by a few lines of white text with black background that ends with "Setup Arch", or it leads to us Apple OpenFirmware page with some message about memory error. Is there a way to get around these problems? I've had similar problems with Ubuntu live CD. Thanks.