I don't have a file named "/var/log/partman" but i do have the syslog, to get this log, after the crash I had to press "ctrl+alt+backspace" to restart X, log in and then copy the file to my desktop to post it here.
I hope this helps. ** Attachment added: "The /var/log/syslog file after the crash, a restart of X and a login." http://librarian.launchpad.net/5629220/syslog -- Feisty installer/OS crashes after selecting keyboard layout https://launchpad.net/bugs/78154 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs