Looking at the huge number of squashfs error messages in your /var/log/syslog, it appears that you have a badly-written CD or a dirty CD drive lens. I suggest burning at a lower speed and/or using an off- the-shelf CD drive cleaning kit to clean the lens.
** Changed in: ubiquity (Ubuntu) Status: Unconfirmed => Rejected -- INSTALLER CRASHED https://launchpad.net/bugs/57695 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs