So, I've got the live/install CD burned. My iBook 300 hates it, I think it's just the CDR it hates. The blue G3 300 also doesn't like it. It'll read the disc, but not boot it. Holding C will attempt to boot from the disc, but it fails and continues booting into OS X. At the Ubuntu site, it says that 192MB of RAM is required to install, but is it required to boot? If so, that's it, since it's only got 128MB. Gaugh.