/var/log/installer/syslog:
[...]
Tue, 11 Jul 2006 01:32:37 INFO     chroot /target mount -t proc proc /proc
Tue, 11 Jul 2006 01:32:37 INFO     chroot /target mount -t sysfs sysfs /sys
Not touching initrd symlinks since we are being reinstalled (2.6.15-23.39)
Not updating image symbolic links since we are being updated (2.6.15-23.39)
Tue, 11 Jul 2006 01:32:58 INFO     chroot /target dpkg-reconfigure -fnoninteractive linux-image-2.6.15-23-386
Tue, 11 Jul 2006 01:33:00 INFO     chroot /target dpkg-reconfigure -fnoninteractive linux-restricted-modules-2.6.15-23-386
Tue, 11 Jul 2006 01:33:00 INFO     chroot /target umount /proc
Tue, 11 Jul 2006 01:33:00 INFO     chroot /target umount /sys
ubiquity: Starting up '['/usr/share/ubiquity/check-kernels']' for ubiquity.components.check_kernels.CheckKernels
Tue, 11 Jul 2006 01:33:00 INFO     mount --bind /proc /target/proc
Tue, 11 Jul 2006 01:33:00 INFO     mount --bind /dev /target/dev
ubiquity: Starting up '['/usr/share/grub-installer/grub-installer', '/target']' for ubiquity.components.grubinstaller.GrubInstaller
ubiquity: ['/usr/share/grub-installer/grub-installer', '/target'] exited with code 10
Tue, 11 Jul 2006 01:33:01 INFO     umount -f /target/proc
Tue, 11 Jul 2006 01:33:01 INFO     umount -f /target/dev
ubiquity: ['/usr/share/ubiquity/install.py'] exited with code 1
Exception in GTK frontend (invoking crash handler):
Traceback (most recent call last):
  File "/usr/bin/ubiquity", line 130, in ?
    install(sys.argv[1])
  File "/usr/bin/ubiquity", line 55, in install
    ret = wizard.run()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 266, in run
    self.process_step()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 741, in process_step
    self.mountpoints_to_summary()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 1029, in mountpoints_to_summary
    self.progress_loop()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 538, in progress_loop
    raise RuntimeError, ("Install failed with exit code %s; see "
RuntimeError: Install failed with exit code 1; see /var/log/installer/syslog and /var/log/syslog

/var/log/syslog:
[...]
Jul 10 23:32:32 ubuntu hw-detect: Trying to load module 'triflex'
Jul 10 23:32:32 ubuntu hw-detect: insmod /lib/modules/2.6.15-23-386/kernel/drivers/ide/pci/triflex.ko
Jul 10 23:32:32 ubuntu hw-detect: Detected module 'trm290' for 'IDE chipset support'
Jul 10 23:32:32 ubuntu hw-detect: Trying to load module 'trm290'
Jul 10 23:32:32 ubuntu hw-detect: insmod /lib/modules/2.6.15-23-386/kernel/drivers/ide/pci/trm290.ko
Jul 10 23:32:32 ubuntu hw-detect: Detected module 'ide-floppy' for 'Linux IDE floppy'
Jul 10 23:32:32 ubuntu hw-detect: Trying to load module 'ide-floppy'
Jul 10 23:32:32 ubuntu kernel: [4295610.126000] ide-floppy driver 0.99.newide
Jul 10 23:32:32 ubuntu hw-detect: insmod /lib/modules/2.6.15-23-386/kernel/drivers/ide/ide-floppy.ko
Jul 10 23:32:33 ubuntu hw-detect: Detected discover version 1, installing discover1.
Jul 10 23:32:33 ubuntu hw-detect: Detected udev support, installing udev.
Jul 10 23:32:33 ubuntu hw-detect: Detected hotplug support, installing usbutils.
Jul 10 23:32:33 ubuntu hw-detect: Detected acpi support, installing acpi/acpid.
Jul 10 23:32:33 ubuntu hw-detect: Missing modules 'ide-core (Linux IDE support), ide-mod (Linux IDE driver), ide-probe-mod (Linux IDE probe driver), ide-detect (Linux IDE detection)
Jul 10 23:32:37 ubuntu logger: register-modules
Jul 10 23:42:00 ubuntu dhclient: DHCPREQUEST on eth0 to 192.168.1.1 port 67
Jul 10 23:42:00 ubuntu dhclient: DHCPACK from 192.168.1.1
Jul 10 23:42:00 ubuntu dhclient: bound to 192.168.1.2 -- renewal in 1444 seconds.
Jul 10 23:44:42 ubuntu gconfd (root-7594): Der GConf-Server wird nicht verwendet und daher beendet.
Jul 10 23:44:42 ubuntu gconfd (root-7594): Beenden
Jul 10 23:58:14 ubuntu -- MARK --