If you ever try to download, burn and install the Ubunto warty ISO image on OS X you’ll find that Disk Utility crashes and hdiutil crashes. To get it to burn you need to install cdrecord using fink (fink install cdrecord) and then use the information on this page to work out how to burn it. On my PowerBook G4 with a DVD-R/CD-RW drive I used the command: sudo cdrecord -v speed=24 dev=IODVDServices warty-rc-install-powerpc.iso and it’s working fine. We’ll see how it goes from here on in.