This looks like your hard disk is either failing, or has serious kernel driver issues. Besides that, the program used for advanced partitioning, gparted, appears to have crashed. The version of the installer present in Ubuntu/Edubuntu/Xubuntu 6.06.1 deals with this more gracefully. If you can reproduce the gparted crash by running it directly from the System -> Administration menu, then please file a separate bug against gparted.
In the meantime, what puzzles me is that you haven't specified a '/' mountpoint... -- lots of problems with partitioning, just can't install 6.06 https://launchpad.net/bugs/53685 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
