the main.log content is :
2010-05-06 10:25:34,575 INFO Using config files '['./DistUpgrade.cfg']'
2010-05-06 10:25:34,576 INFO uname information: 'Linux morgand-acer
2.6.31-21-generic #59-Ubuntu SMP Wed Mar 24 07:28:27 UTC 2010 x86_64'
2010-05-06 10:25:34,576 INFO creating state file with '['tar', '-z', '-c',
'-f', '/var/log/dist-upgrade/system_state.tar.gz', '/etc/apt/preferences.d/',
'/etc/apt/sources.list', '/etc/apt/sources.list.d/', '/var/lib/dpkg/status']'
2010-05-06 10:25:34,767 INFO release-upgrader version '0.134.7' started
2010-05-06 10:25:34,961 DEBUG svg pixbuf loader failed (Error displaying image)
2010-05-06 10:25:35,091 DEBUG Using 'DistUpgradeViewGtk' view
2010-05-06 10:25:35,128 DEBUG aufsOptionsAndEnvironmentSetup()
2010-05-06 10:25:35,128 DEBUG using '/tmp/upgrade-rw-y20i1g' as aufs_rw_dir
2010-05-06 10:25:35,129 DEBUG using '/tmp/upgrade-chroot-jGEkkI' as aufs chroot
dir
2010-05-06 10:25:35,129 DEBUG enable dpkg --force-overwrite
2010-05-06 10:25:35,319 DEBUG lsb-release: 'karmic'
2010-05-06 10:25:35,325 DEBUG who -m --ips: ''
2010-05-06 10:25:35,326 DEBUG _pythonSymlinkCheck run
2010-05-06 10:25:35,326 DEBUG openCache()
2010-05-06 10:25:36,707 DEBUG /openCache(), new cache size 28849
2010-05-06 10:25:36,718 DEBUG needServerMode(): run in 'desktop' mode, (because
of pkg 'ubuntu-desktop')
2010-05-06 10:25:36,718 DEBUG checkViewDepends()
2010-05-06 10:25:36,719 DEBUG running doUpdate() (showErrors=False)
2010-05-06 10:25:37,000 WARNING updateStatus: dlFailed on
'http://security.ubuntu.com/ubuntu/dists/karmic-security/universe/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,139 WARNING updateStatus: dlFailed on
'http://security.ubuntu.com/ubuntu/dists/karmic-security/main/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,140 WARNING updateStatus: dlFailed on
'http://security.ubuntu.com/ubuntu/dists/karmic-security/multiverse/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,140 WARNING updateStatus: dlFailed on
'http://security.ubuntu.com/ubuntu/dists/karmic-security/restricted/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,189 WARNING updateStatus: dlFailed on
'http://archive.ubuntu.com/ubuntu/dists/karmic-updates/universe/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,200 WARNING updateStatus: dlFailed on
'http://archive.ubuntu.com/ubuntu/dists/karmic-updates/main/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,200 WARNING updateStatus: dlFailed on
'http://archive.ubuntu.com/ubuntu/dists/karmic-updates/multiverse/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,200 WARNING updateStatus: dlFailed on
'http://archive.ubuntu.com/ubuntu/dists/karmic-updates/restricted/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,274 WARNING updateStatus: dlFailed on
'http://archive.ubuntu.com/ubuntu/dists/karmic-backports/universe/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,345 WARNING updateStatus: dlFailed on
'http://archive.ubuntu.com/ubuntu/dists/karmic-backports/main/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,352 WARNING updateStatus: dlFailed on
'http://archive.ubuntu.com/ubuntu/dists/karmic-backports/multiverse/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,361 WARNING updateStatus: dlFailed on
'http://archive.ubuntu.com/ubuntu/dists/karmic-backports/restricted/i18n/Translation-fr.bz2'
2010-05-06 10:25:37,802 DEBUG openCache()
2010-05-06 10:25:38,985 DEBUG /openCache(), new cache size 28849
2010-05-06 10:25:38,985 DEBUG doPostInitialUpdate
2010-05-06 10:25:38,986 DEBUG Plugin modules in ./plugins:
remove_lilo_plugin.py kdelibs4to5_plugin.py deb_plugin.py dpkg_status_plugin.py
langpack_manual_plugin.py
2010-05-06 10:25:38,986 DEBUG Loading module ./plugins/remove_lilo_plugin.py
2010-05-06 10:25:39,001 DEBUG Plugins in :
2010-05-06 10:25:39,001 DEBUG Loading module ./plugins/kdelibs4to5_plugin.py
2010-05-06 10:25:39,002 DEBUG Plugins in :
2010-05-06 10:25:39,002 DEBUG Loading module ./plugins/deb_plugin.py
2010-05-06 10:25:39,003 DEBUG Plugins in :
2010-05-06 10:25:39,003 DEBUG Loading module ./plugins/dpkg_status_plugin.py
2010-05-06 10:25:39,004 DEBUG Plugins in :
2010-05-06 10:25:39,004 DEBUG Loading module ./plugins/langpack_manual_plugin.py
2010-05-06 10:25:39,005 DEBUG Plugins in :
2010-05-06 10:25:39,005 DEBUG plugins for condition 'PostInitialUpdate' are '[]'
2010-05-06 10:25:39,005 DEBUG plugins for condition 'lucidPostInitialUpdate'
are '[]'
2010-05-06 10:25:39,006 DEBUG plugins for condition
'from_karmicPostInitialUpdate' are '[]'
2010-05-06 10:25:39,006 DEBUG quirks: running lucidPostInitialUpdate
2010-05-06 10:25:39,006 DEBUG running lucidPostInitialUpdate
2010-05-06 10:25:42,903 DEBUG Foreign:
2010-05-06 10:25:42,904 DEBUG Obsolete: libecore-svn-05 openshot-doc libnfo
libecore-file-svn-05 libevas-engines cover-thumbnailer libecore-x-svn-05
libelm-svn-05 libedje-svn-05 libevas-svn-05 libvalhalla enna mmex libvdpau1
libecore-fb-svn-05 libecore-config-svn-05 libopal3.6.6 nvidia-glx-195
libecore-job-svn-05 usplash-theme-xbmc-spinner-black
usplash-theme-xbmc-spin