Cutout from /var/log/syslog that seems relevant:


Jan 21 15:36:06 ubuntu os-prober: debug: running /usr/lib/os-probes/50mounted-tests on /dev/sda7
Jan 21 15:36:06 ubuntu 50mounted-tests: debug: /dev/sda7 is a swap partition; skipping
Jan 21 15:36:06 ubuntu os-prober: debug: os detected by /usr/lib/os-probes/50mounted-tests
Jan 21 15:36:06 ubuntu migration-assistant: info: setting ostype from: '/dev/sda1:Microsoft Windows XP Professional:Windows:chain'
Jan 21 15:36:06 ubuntu migration-assistant: info: got ostype of: 'windowsxp', mountpoint is: '/mnt/migrationassistant'
Jan 21 15:36:07 ubuntu ntfs-3g[15801]: Version 2009.4.4 external FUSE 27
Jan 21 15:36:07 ubuntu ntfs-3g[15801]: Mounted /dev/sda1 (Read-Write, label "", NTFS 3.1)
Jan 21 15:36:07 ubuntu ntfs-3g[15801]: Cmdline options: rw,umask=0022,nls=utf8
Jan 21 15:36:07 ubuntu ntfs-3g[15801]: Mount options: rw,nls=utf8,silent,allow_other,nonempty,default_permissions,relatime,fsname=/dev/sda1,blkdev,blksize=4096
profilesdir: /mnt/migrationassistant/Documents and Settings
profilesdir: /mnt/migrationassistant/Documents and Settings
Jan 21 15:36:08 ubuntu ntfs-3g[15801]: Unmounting /dev/sda1 ()
Jan 21 15:36:08 ubuntu ubiquity[5026]: switched to page migrationassistant
Jan 21 15:36:10 ubuntu ubiquity[5026]: debconffilter_done: ubiquity.components.migrationassistant (current: ubiquity.components.migrationassistant)
Jan 21 15:36:10 ubuntu ubiquity[5026]: Step_before = stepMigrationAssistant
Jan 21 15:36:10 ubuntu ubiquity[5026]: switched to page summary
Jan 21 15:36:16 ubuntu ubiquity[5026]: debconffilter_done: ubiquity.components.summary (current: ubiquity.components.summary)
Jan 21 15:36:16 ubuntu ubiquity[5026]: Step_before = stepReady
Jan 21 15:36:16 ubuntu ubiquity[5026]: progress_loop()
Jan 21 15:36:16 ubuntu ubiquity[5026]: Exception in GTK frontend (invoking crash handler):
Jan 21 15:36:16 ubuntu ubiquity[5026]: Traceback (most recent call last):
Jan 21 15:36:16 ubuntu ubiquity[5026]:   File "/usr/lib/ubiquity/bin/ubiquity", line 450, in <module>
Jan 21 15:36:16 ubuntu ubiquity[5026]:     main(oem_config)
Jan 21 15:36:16 ubuntu ubiquity[5026]:   File "/usr/lib/ubiquity/bin/ubiquity", line 435, in main
Jan 21 15:36:16 ubuntu ubiquity[5026]:     install(args[0], query=options.query)
Jan 21 15:36:16 ubuntu ubiquity[5026]:   File "/usr/lib/ubiquity/bin/ubiquity", line 243, in install
Jan 21 15:36:16 ubuntu ubiquity[5026]:     ret = wizard.run()
Jan 21 15:36:16 ubuntu ubiquity[5026]:   File "/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py", line 512, in run
Jan 21 15:36:16 ubuntu ubiquity[5026]:     self.progress_loop()
Jan 21 15:36:16 ubuntu ubiquity[5026]:   File "/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py", line 952, in progress_loop
Jan 21 15:36:16 ubuntu ubiquity[5026]:     slideshow_locale = slideshow_get_available_locale(slideshow_dir, self.locale)
Jan 21 15:36:16 ubuntu ubiquity[5026]: NameError: global name 'slideshow_get_available_locale' is not defined
Jan 21 15:36:16 ubuntu ubiquity[5026]: 
Jan 21 15:36:30 ubuntu wpa_supplicant[2020]: CTRL-EVENT-SCAN-RESULTS 
Jan 21 15:37:30 ubuntu wpa_supplicant[2020]: CTRL-EVENT-SCAN-RESULTS 
Jan 21 15:38:30 ubuntu wpa_supplicant[2020]: CTRL-EVENT-SCAN-RESULTS