I bought DSL linux on a credit card size cd. I like it alot. I used Ubuntu. I ordered a couple of CDs. One distribution did not let me create a root password. The second set , a new release did. I can not say much against Ubuntu. A university that I went to uses it with Mathematica.
I guess I will have to tough it out with RHEL for a while. I have RedhatFCore,Mandriva and/or Mandrake,Suse,Slackware,Ubuntu,DSL,Debian(somewhere),Gentoo and an early release of Storm Linux.
I wish I had an IBM RS6000 or similar. I believe the Firmware is more forgiving than Apple.
I wish I knew more about Linux on IBM.