On a ppc32 install I just did the bootloader doesn't seem to actually be installed. I had to rescue it and run ybin in order to have a boot loader. After that everything worked.
We should be running /sbin/mkofboot here instead of ybin. Can you attach all the usual log files to this bug report, or should I wait until rawhide syncs up to take it for a spin locally?
I didn't notice that things weren't setup right until after I rebooted, and once I did that, storage.log and program.log were missing (we should be saving those!). Once rawhide syncs here I'll try another install to try and reproduce it.
Got the log message Running ... ['/sbin/mkofboot', '/sbin/mkofboot', '-f', '-C', '/boot/etc/yaboot.conf'] If you notice, the program is passed twice as arguments. I tracked this back to a change from using rhpl.exec to iutil when execing things and a difference in how they treat arguments. I've submitted a patch that should fix this upstream.
Your fix will be in anaconda-11.5.0.46-1.
Confirmed fixed.