This is syslog :
Oct 23 18:14:37 ubuntu ubiquity[7049]: Ubiquity 1.2.4
Oct 23 18:14:42 ubuntu ubiquity[7049]: log-output -t ubiquity laptop-detect
Oct 23 18:14:43 ubuntu ubiquity[7049]: ubiquity: locale.setlocale failed: 
unsupported locale setting (LANG=fr_FR)
Oct 23 18:14:45 ubuntu ubiquity[7049]: ubiquity: Starting 
up '['log-output', '-t', 'ubiquity', '--pass-stdout', '/usr/lib/ub
iquity/localechooser/localechooser']' for 
ubiquity.components.language.Language
Oct 23 18:14:45 ubuntu ubiquity[7049]: ubiquity: Watching for question 
patterns ^languagechooser/language-name, ^countrychoo
ser/shortlist$
Oct 23 18:14:45 ubuntu localechooser: info: Locale has been preseeded to fr_FR
Oct 23 18:14:45 ubuntu localechooser: info: Set languagechooser/language-name 
= 'French'
Oct 23 18:14:45 ubuntu localechooser: info: Set countrychooser/shortlist-fr 
= 'FR'
Oct 23 18:14:45 ubuntu localechooser: info: Set debian-installer/locale 
= 'fr_FR'
Oct 23 18:14:56 ubuntu localechooser: info: LANGNAME=French
Oct 23 18:14:56 ubuntu localechooser: info: 
line=French;1;fr;FR;fr_FR.UTF-8;UTF-8;;kbd=lat9u-16(utf8)
Oct 23 18:14:56 ubuntu localechooser: info: Set debian-installer/language 
= 'fr'
Oct 23 18:14:56 ubuntu localechooser: info: Set debian-installer/locale 
= 'fr_FR.UTF-8'
Oct 23 18:14:56 ubuntu localechooser: info: Set 
debian-installer/fallbacklocale = 'fr_FR.UTF-8'
Oct 23 18:14:56 ubuntu localechooser: info: Set debian-installer/country 
= 'FR'
Oct 23 18:14:56 ubuntu localechooser: info: Set 
debian-installer/consoledisplay = 'kbd=lat9u-16(utf8)'
Oct 23 18:14:56 ubuntu localechooser: info: Set debconf/language = 'fr'
Oct 23 18:14:56 ubuntu localechooser: info: Set countrychooser/country-name 
= 'France'
Oct 23 18:14:56 ubuntu localechooser: info: Set debian-installer/country 
= 'FR'
Oct 23 18:14:56 ubuntu localechooser: info: Set debian-installer/locale 
= 'fr_FR.UTF-8'
Oct 23 18:14:56 ubuntu ubiquity[7049]: debconffilter_done: Language (current: 
Language)
Oct 23 18:14:56 ubuntu ubiquity[7049]: Step_before = stepLanguage
Oct 23 18:14:58 ubuntu ubiquity[7049]: Step_after = stepLocation
Oct 23 18:14:59 ubuntu ubiquity[7049]: ubiquity: Starting 
up '['log-output', '-t', 'ubiquity', '--pass-stdout', '/usr/share/
ubiquity/tzsetup']' for ubiquity.components.timezone.Timezone
Oct 23 18:14:59 ubuntu ubiquity[7049]: ubiquity: Watching for question 
patterns ^time/zone$
Oct 23 18:15:01 ubuntu localechooser: info: Locale has been preseeded to 
fr_FR.UTF-8
Oct 23 18:15:01 ubuntu localechooser: info: Set languagechooser/language-name 
= 'French'
Oct 23 18:15:01 ubuntu localechooser: info: Set countrychooser/shortlist-fr 
= 'FR'
Oct 23 18:15:01 ubuntu localechooser: info: Set debian-installer/locale 
= 'fr_FR.UTF-8'
Oct 23 18:15:01 ubuntu localechooser: info: Set debconf/language = ''
Oct 23 18:15:01 ubuntu localechooser: info: Set countrychooser/country-name 
= 'France'
Oct 23 18:15:01 ubuntu localechooser: info: Set debian-installer/country 
= 'FR'
Oct 23 18:15:01 ubuntu localechooser: info: Set debian-installer/locale 
= 'fr_FR.UTF-8'
Oct 23 18:15:01 ubuntu ubiquity[7049]: debconffilter_done: Timezone (current: 
Timezone)
Oct 23 18:15:01 ubuntu ubiquity[7049]: Step_before = stepLocation
Oct 23 18:15:01 ubuntu ubiquity[7049]: Step_after = stepKeyboardConf
Oct 23 18:15:02 ubuntu ubiquity[7049]: ubiquity: Starting 
up '['log-output', '-t', 'ubiquity', '--pass-stdout', '/usr/lib/ub
iquity/console-setup/console-setup.postinst', 'configure']' for 
ubiquity.components.console_setup.ConsoleSetup
Oct 23 18:15:02 ubuntu ubiquity[7049]: ubiquity: Watching for question 
patterns ^console-setup/layout, ^console-setup/varian
t
Oct 23 18:15:03 ubuntu ubiquity[7049]: ubiquity: Setting keyboard layout: 
pc105 fr  []
Oct 23 18:15:03 ubuntu ubiquity[7049]: log-output -t ubiquity setxkbmap -model 
pc105 -layout fr
Oct 23 18:15:07 ubuntu ubiquity: Your console configuration will be updated 
the next time your system boots.
Oct 23 18:15:07 ubuntu ubiquity: If you want to update it now, run 'setupcon' 
from a virtual console.
Oct 23 18:15:08 ubuntu ubiquity[7049]: log-output -t ubiquity setxkbmap -model 
pc105 -layout fr -option lv3:ralt_switch
Oct 23 18:15:08 ubuntu ubiquity[7049]: debconffilter_done: ConsoleSetup 
(current: ConsoleSetup)
Oct 23 18:15:08 ubuntu ubiquity[7049]: Step_before = stepKeyboardConf
Oct 23 18:15:08 ubuntu ubiquity[7049]: Step_after = stepUserInfo
Oct 23 18:15:09 ubuntu ubiquity[7049]: ubiquity: Starting 
up '['log-output', '-t', 'ubiquity', '--pass-stdout', '/usr/lib/ub
iquity/user-setup/user-setup-ask', '/target']' for 
ubiquity.components.usersetup.UserSetup
Oct 23 18:15:09 ubuntu ubiquity[7049]: ubiquity: Watching for question 
patterns ^passwd/user-fullname$, ^passwd/username$, ^
passwd/user-password$, ^passwd/user-password-again$, ERROR
Oct 23 18:15:39 ubuntu ubiquity[7049]: debconffilter_done: UserSetup (current: 
UserSetup)
Oct 23 18:15:39 ubuntu ubiquity[7049]: Step_before = stepUserInfo
Oct 23 18:15:39 ubuntu ubiquity[7049]: Step_after = stepPartDisk
Oct 23 18:15:40 ubuntu ubiquity[7049]: ubiquity: Starting 
up '['log-output', '-t', 'ubiquity', '--pass-stdout', '/bin/partma
n']' for ubiquity.components.partman_auto.PartmanAuto
Oct 23 18:15:40 ubuntu ubiquity[7049]: ubiquity: Watching for question 
patterns ^partman-auto/select_disk$, ^partman-auto/.*
automatically_partition$, ^partman-partitioning/new_size$, 
^partman/choose_partition$, ^partman/confirm.*, type:boolean, ERR
OR, PROGRESS
Oct 23 18:15:40 ubuntu ubiquity: unsupported
Oct 23 18:15:40 ubuntu ubiquity: kernelmodules_basicfilesystems
Oct 23 18:15:41 ubuntu kernel: [17179878.088000] NTFS driver 2.1.27 [Flags: 
R/O MODULE].
Oct 23 18:15:41 ubuntu ubiquity: kernelmodules_ext3
Oct 23 18:15:41 ubuntu ubiquity: kernelmodules_jfs
Oct 23 18:15:41 ubuntu kernel: [17179878.508000] JFS: nTxBlock = 8091, nTxLock 
= 64729
Oct 23 18:15:41 ubuntu ubiquity: kernelmodules_reiserfs
Oct 23 18:15:41 ubuntu ubiquity: kernelmodules_xfs
Oct 23 18:15:41 ubuntu kernel: [17179878.976000] SGI XFS with ACLs, security 
attributes, realtime, large block numbers, no d
ebug enabled
Oct 23 18:15:41 ubuntu kernel: [17179878.976000] SGI XFS Quota Management 
subsystem
Oct 23 18:15:41 ubuntu ubiquity: umount_target
Oct 23 18:15:41 ubuntu ubiquity: parted
Oct 23 18:15:42 ubuntu ubiquity: dump
Oct 23 18:15:42 ubuntu ubiquity: update_partitions
Oct 23 18:15:45 ubuntu ubiquity: filesystems_detected
Oct 23 18:15:45 ubuntu ubiquity: auto_mountpoints
Oct 23 18:15:47 ubuntu ubiquity: autouse_swap
Oct 23 18:15:48 ubuntu ubiquity: backup
Oct 23 18:16:19 ubuntu ubiquity[7049]: ubiquity: 
['log-output', '-t', 'ubiquity', '--pass-stdout', '/bin/partman'] exited wi
th code 10
Oct 23 18:16:19 ubuntu ubiquity[7049]: debconffilter_done: PartmanAuto 
(current: PartmanAuto)
Oct 23 18:16:19 ubuntu ubiquity[7049]: Step_before = stepPartDisk
Oct 23 18:16:19 ubuntu ubiquity[7049]: qtparted_loop()
Oct 23 18:16:19 ubuntu ubiquity: X Error: BadDevice, invalid or uninitialized 
input device 166
Oct 23 18:16:19 ubuntu ubiquity: Â  Major opcode: Â 144
Oct 23 18:16:19 ubuntu ubiquity: Â  Minor opcode: Â 3
Oct 23 18:16:19 ubuntu ubiquity: Â  Resource id: Â 0x0
Oct 23 18:16:19 ubuntu ubiquity: Failed to open device
Oct 23 18:16:19 ubuntu ubiquity: X Error: BadDevice, invalid or uninitialized 
input device 166
Oct 23 18:16:19 ubuntu ubiquity: Â  Major opcode: Â 144
Oct 23 18:16:19 ubuntu ubiquity: Â  Minor opcode: Â 3
Oct 23 18:16:19 ubuntu ubiquity: Â  Resource id: Â 0x0
Oct 23 18:16:19 ubuntu ubiquity: Failed to open device
Oct 23 18:16:21 ubuntu ubiquity: No Implementation:
Oct 23 18:16:21 ubuntu ubiquity: Le support pour l'ouverture du système de 
fichiers ntfs n'est pas encore implémenté.
Oct 23 18:16:33 ubuntu ubiquity: bad data in /proc/uptime
Oct 23 18:16:34 ubuntu ubiquity: No Implementation:
Oct 23 18:16:34 ubuntu ubiquity: Le support pour l'ouverture du système de 
fichiers ntfs n'est pas encore implémenté.
Oct 23 18:16:44 ubuntu ubiquity: bad data in /proc/uptime
Oct 23 18:16:44 ubuntu ubiquity[7049]: Step_after = stepPartAdvanced
Oct 23 18:17:01 ubuntu /USR/SBIN/CRON[9927]: (root) CMD ( Â  
run-parts --report /etc/cron.hourly)
Oct 23 18:23:55 ubuntu ubiquity[7049]: Step_before = stepPartAdvanced
Oct 23 18:30:31 ubuntu ubiquity[7049]: qtparted replied:
Oct 23 18:31:02 ubuntu last message repeated 819831 times
Oct 23 18:32:03 ubuntu last message repeated 1484283 times
Oct 23 18:33:04 ubuntu last message repeated 1574494 times
Oct 23 18:34:05 ubuntu last message repeated 1607214 times
Oct 23 18:35:06 ubuntu last message repeated 1641238 times
Oct 23 18:36:07 ubuntu last message repeated 1650085 times
Oct 23 18:37:08 ubuntu last message repeated 1434374 times
Oct 23 18:38:09 ubuntu last message repeated 1616992 times
Oct 23 18:39:10 ubuntu last message repeated 1558950 times
Oct 23 18:40:11 ubuntu last message repeated 1639897 times
Oct 23 18:41:12 ubuntu last message repeated 1640808 times
Oct 23 18:42:13 ubuntu last message repeated 1617884 times

Ubiquity can't be respawned because :
9908 ?  0:00 [log-output] <defunct>
cannot be killed....