/var/log/bootstrap.log isn't useful; it's created during the live CD build process, not on your system.
It is extremely strange that /var/log/installer/syslog does not exist; the installer creates that as practically the first thing it does, and your crash is well into the installation. I suspect that your kernel is confused at the filesystem level. Would you mind doing a CD integrity check to make sure that the CD is properly burnt, etc.? Unfortunately, the error traceback you quote is not very useful in itself, and needs /var/log/installer/syslog for a full diagnosis. Please try enabling dapper-updates in /etc/apt/sources.list and then doing 'apt-get update; apt-get install gparted ubiquity ubiquity-frontend-gtk ubiquity-ubuntu-artwork'. The version of ubiquity in dapper-updates has a number of bug fixes, but more to the point will give more detail in tracebacks if something goes wrong at this stage. Thanks in advance. ** Changed in: ubiquity (Ubuntu) Status: Unconfirmed => Needs Info -- Installer Crashed-seeking help https://launchpad.net/bugs/55064 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs