It's resolved now, thanks for your and some other report.
> I was able to install base system from command line, but this should
> be corrected anyway. I don't know much about powerpc, but why there
> are two linux packages, instead of building for two architectures?
We support both powerpc 32 and 64 bit; But don't think that they're the
same of Intel x86 :)
In general, we need only the kernel compiled for 64 bit, other
application could stay 32 bit.