Failed to upgrade to natty: no 'ubuntu-minimal'

[lucaberrafato]

Binary package hint: update-manager

After your package information was updated the essential package 'ubuntu-minimal' can not be found anymore.
This indicates a serious error, please report this bug against the 'update-manager' package and include the files in /var/log/dist-upgrade/ in the bug report.

apt.log:
Log time: 2011-04-28 17:34:44.780184
Log time: 2011-04-28 17:39:48.200037
Log time: 2011-04-28 17:40:48.193188
Log time: 2011-04-28 17:44:16.342326

lspci.txt:
00:00.0 Host bridge [0600]: Silicon Integrated Systems [SiS] 671MX [1039:0671]
00:01.0 PCI bridge [0604]: Silicon Integrated Systems [SiS] SiS AGP Port (virtual PCI-to-PCI bridge) [1039:0003]
00:02.0 ISA bridge [0601]: Silicon Integrated Systems [SiS] SiS968 [MuTIOL Media IO] [1039:0968] (rev 01)
00:02.5 IDE interface [0101]: Silicon Integrated Systems [SiS] 5513 [IDE] [1039:5513] (rev 01)
00:03.0 USB Controller [0c03]: Silicon Integrated Systems [SiS] USB 1.1 Controller [1039:7001] (rev 0f)
00:03.1 USB Controller [0c03]: Silicon Integrated Systems [SiS] USB 1.1 Controller [1039:7001] (rev 0f)
00:03.3 USB Controller [0c03]: Silicon Integrated Systems [SiS] USB 2.0 Controller [1039:7002]
00:04.0 Ethernet controller [0200]: Silicon Integrated Systems [SiS] 191 Gigabit Ethernet Adapter [1039:0191] (rev 02)
00:05.0 IDE interface [0101]: Silicon Integrated Systems [SiS] SATA Controller / IDE mode [1039:1183] (rev 03)
00:0f.0 Audio device [0403]: Silicon Integrated Systems [SiS] Azalia Audio Controller [1039:7502]
01:00.0 VGA compatible controller [0300]: Silicon Integrated Systems [SiS] 771/671 PCIE VGA Display Adapter [1039:6351] (rev 10)

main.log:
2011-04-28 17:34:37,679 INFO Using config files '['./DistUpgrade.cfg']'
2011-04-28 17:34:37,680 INFO uname information: 'Linux luca-T7600 2.6.35-28-generic #50-Ubuntu SMP Fri Mar 18 19:00:26 UTC 2011 i686'
2011-04-28 17:34:37,680 INFO release-upgrader version '0.150' started
2011-04-28 17:34:38,322 DEBUG svg pixbuf loader failed (Error displaying image)
2011-04-28 17:34:39,991 DEBUG Using 'DistUpgradeViewGtk' view
2011-04-28 17:34:40,059 DEBUG aufsOptionsAndEnvironmentSetup()
2011-04-28 17:34:40,060 DEBUG using '/tmp/upgrade-rw-UHSFJI' as aufs_rw_dir
2011-04-28 17:34:40,060 DEBUG using '/tmp/upgrade-chroot-gRmRVK' as aufs chroot dir
2011-04-28 17:34:40,061 DEBUG enable dpkg --force-overwrite
2011-04-28 17:34:40,108 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2011-04-28 17:34:44,278 DEBUG lsb-release: 'maverick'
2011-04-28 17:34:44,279 DEBUG _pythonSymlinkCheck run
2011-04-28 17:34:44,311 DEBUG openCache()
2011-04-28 17:34:44,846 DEBUG /openCache(), new cache size 32332
2011-04-28 17:34:44,847 DEBUG needServerMode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2011-04-28 17:34:44,847 DEBUG checkViewDepends()
2011-04-28 17:34:44,847 DEBUG running doUpdate() (showErrors=False)
2011-04-28 17:39:44,237 ERROR IOError/SystemError in cache.update(): 'W:Impossibile recuperare http://it.archive.ubuntu.com/ubuntu/dists/maverick-updates/restricted/i18n/Translation-it.bz2 Connessione non riuscita [IP: 193.206.139.34 80]
, W:Impossibile recuperare http://it.archive.ubuntu.com/ubuntu/dists/maverick-updates/restricted/binary-i386/Packages.gz Impossibile connettersi a it.archive.ubuntu.com:http: [IP: 193.206.140.37 80]
, W:Impossibile recuperare http://it.archive.ubuntu.com/ubuntu/dists/maverick-updates/universe/binary-i386/Packages.gz Impossibile connettersi a it.archive.ubuntu.com:http: [IP: 193.206.140.37 80]
, W:Impossibile recuperare http://it.archive.ubuntu.com/ubuntu/dists/maverick-updates/multiverse/binary-i386/Packages.gz Impossibile connettersi a it.archive.ubuntu.com:http: [IP: 193.206.140.37 80]
, E:Impossibile scaricare alcuni file di indice: saranno ignorati o verranno usati quelli vecchi.'. Retrying (currentRetry: 0)
2011-04-28 17:39:44,237 ERROR doUpdate() failed completely
2011-04-28 17:39:44,237 DEBUG openCache()
2011-04-28 17:39:48,284 DEBUG /openCache(), new cache size 32332
2011-04-28 17:39:48,284 DEBUG doPostInitialUpdate
2011-04-28 17:39:48,284 DEBUG Plugin modules in ./plugins: langpack_manual_plugin.py deb_plugin.py kdelibs4to5_plugin.py dpkg_status_plugin.py remove_lilo_plugin.py
2011-04-28 17:39:48,284 DEBUG Loading module ./plugins/langpack_manual_plugin.py
2011-04-28 17:39:48,286 DEBUG Plugins in <module 'langpack_manual_plugin' from './plugins/langpack_manual_plugin.py'>: <class 'langpack_manual_plugin.MarkLangpacksManuallyInstalledPlugin'>
2011-04-28 17:39:48,287 DEBUG Loading module ./plugins/deb_plugin.py
2011-04-28 17:39:48,288 DEBUG Plugins in <module 'deb_plugin' from './plugins/deb_plugin.py'>: <class 'deb_plugin.DebPlugin'>
2011-04-28 17:39:48,288 DEBUG Loading module ./plugins/kdelibs4to5_plugin.py
2011-04-28 17:39:48,289 DEBUG Plugins in <module 'kdelibs4to5_plugin' from './plugins/kdelibs4to5_plugin.py'>: <class 'kdelibs4to5_plugin.Kdelibs4devToKdelibs5devPlugin'>
2011-04-28 17:39:48,289 DEBUG Loading module ./plugins/dpkg_status_plugin.py
2011-04-28 17:39:48,291 DEBUG Plugins in <module 'dpkg_status_plugin' from './plugins/dpkg_status_plugin.py'>: <class 'dpkg_status_plugin.DpkgStatusPlugin'>
2011-04-28 17:39:48,291 DEBUG Loading module ./plugins/remove_lilo_plugin.py
2011-04-28 17:39:48,293 DEBUG Plugins in <module 'remove_lilo_plugin' from './plugins/remove_lilo_plugin.py'>: <class 'remove_lilo_plugin.RemoveLiloPlugin'>
2011-04-28 17:39:48,302 DEBUG plugins for condition 'PostInitialUpdate' are '[]'
2011-04-28 17:39:48,302 DEBUG plugins for condition 'nattyPostInitialUpdate' are '[]'
2011-04-28 17:39:48,302 DEBUG plugins for condition 'from_maverickPostInitialUpdate' are '[]'
2011-04-28 17:39:53,695 DEBUG Foreign: medibuntu-keyring non-free-codecs firefox firefox-branding libdvdcss2 language-pack-en ubufox language-pack-it-base firefox-globalmenu libavutil-extra-50 w32codecs language-pack-en-base libavcodec-extra-52 xul-ext-ubufox apport-hooks-medibuntu language-pack-it firefox-gnome-support
2011-04-28 17:39:53,695 DEBUG Obsolete:
2011-04-28 17:39:53,697 DEBUG updateSourcesList()
2011-04-28 17:39:53,773 DEBUG rewriteSourcesList()
2011-04-28 17:39:53,778 DEBUG examining: 'deb http://it.archive.ubuntu.com/ubuntu/ maverick main restricted'
2011-04-28 17:39:53,778 DEBUG entry 'deb http://it.archive.ubuntu.com/ubuntu/ natty main restricted' updated to new dist
2011-04-28 17:39:53,778 DEBUG examining: 'deb-src http://it.archive.ubuntu.com/ubuntu/ maverick main restricted'
2011-04-28 17:39:53,779 DEBUG entry 'deb-src http://it.archive.ubuntu.com/ubuntu/ natty main restricted' updated to new dist
2011-04-28 17:39:53,779 DEBUG examining: 'deb http://it.archive.ubuntu.com/ubuntu/ maverick-updates main restricted'
2011-04-28 17:39:53,779 DEBUG entry 'deb http://it.archive.ubuntu.com/ubuntu/ natty-updates main restricted' updated to new dist
2011-04-28 17:39:53,779 DEBUG examining: 'deb-src http://it.archive.ubuntu.com/ubuntu/ maverick-updates main restricted'
2011-04-28 17:39:53,779 DEBUG entry 'deb-src http://it.archive.ubuntu.com/ubuntu/ natty-updates main restricted' updated to new dist
2011-04-28 17:39:53,779 DEBUG examining: 'deb http://it.archive.ubuntu.com/ubuntu/ maverick universe'
2011-04-28 17:39:53,779 DEBUG entry 'deb http://it.archive.ubuntu.com/ubuntu/ natty universe' updated to new dist
2011-04-28 17:39:53,780 DEBUG examining: 'deb-src http://it.archive.ubuntu.com/ubuntu/ maverick universe'
2011-04-28 17:39:53,780 DEBUG entry 'deb-src http://it.archive.ubuntu.com/ubuntu/ natty universe' updated to new dist
2011-04-28 17:39:53,780 DEBUG examining: 'deb http://it.archive.ubuntu.com/ubuntu/ maverick-updates universe'
2011-04-28 17:39:53,780 DEBUG entry 'deb http://it.archive.ubuntu.com/ubuntu/ natty-updates universe' updated to new dist
2011-04-28 17:39:53,780 DEBUG examining: 'deb-src http://it.archive.ubuntu.com/ubuntu/ maverick-updates universe'
2011-04-28 17:39:53,780 DEBUG entry 'deb-src http://it.archive.ubuntu.com/ubuntu/ natty-updates universe' updated to new dist
2011-04-28 17:39:53,780 DEBUG examining: 'deb http://it.archive.ubuntu.com/ubuntu/ maverick multiverse'
2011-04-28 17:39:53,781 DEBUG entry 'deb http://it.archive.ubuntu.com/ubuntu/ natty multiverse' updated to new dist
2011-04-28 17:39:53,781 DEBUG examining: 'deb-src http://it.archive.ubuntu.com/ubuntu/ maverick multiverse'
2011-04-28 17:39:53,781 DEBUG entry 'deb-src http://it.archive.ubuntu.com/ubuntu/ natty multiverse' updated to new dist
2011-04-28 17:39:53,781 DEBUG examining: 'deb http://it.archive.ubuntu.com/ubuntu/ maverick-updates multiverse'
2011-04-28 17:39:53,781 DEBUG entry 'deb http://it.archive.ubuntu.com/ubuntu/ natty-updates multiverse' updated to new dist
2011-04-28 17:39:53,781 DEBUG examining: 'deb-src http://it.archive.ubuntu.com/ubuntu/ maverick-updates multiverse'
2011-04-28 17:39:53,782 DEBUG entry 'deb-src http://it.archive.ubuntu.com/ubuntu/ natty-updates multiverse' updated to new dist
2011-04-28 17:39:53,782 DEBUG examining: 'deb http://archive.canonical.com/ubuntu maverick partner'
2011-04-28 17:39:53,782 DEBUG entry 'deb http://archive.canonical.com/ubuntu natty partner' updated to new dist
2011-04-28 17:39:53,782 DEBUG examining: 'deb-src http://archive.canonical.com/ubuntu maverick partner'
2011-04-28 17:39:53,782 DEBUG entry 'deb-src http://archive.canonical.com/ubuntu natty partner' updated to new dist
2011-04-28 17:39:53,782 DEBUG examining: 'deb http://extras.ubuntu.com/ubuntu maverick main'
2011-04-28 17:39:53,783 DEBUG entry 'deb http://extras.ubuntu.com/ubuntu natty main' updated to new dist
2011-04-28 17:39:53,783 DEBUG examining: 'deb-src http://extras.ubuntu.com/ubuntu maverick main'
2011-04-28 17:39:53,783 DEBUG entry 'deb-src http://extras.ubuntu.com/ubuntu natty main' updated to new dist
2011-04-28 17:39:53,783 DEBUG examining: 'deb http://security.ubuntu.com/ubuntu maverick-security main restricted'
2011-04-28 17:39:53,783 DEBUG entry 'deb http://security.ubuntu.com/ubuntu natty-security main restricted' updated to new dist
2011-04-28 17:39:53,783 DEBUG examining: 'deb-src http://security.ubuntu.com/ubuntu maverick-security main restricted'
2011-04-28 17:39:53,784 DEBUG entry 'deb-src http://security.ubuntu.com/ubuntu natty-security main restricted' updated to new dist
2011-04-28 17:39:53,784 DEBUG examining: 'deb http://security.ubuntu.com/ubuntu maverick-security universe'
2011-04-28 17:39:53,784 DEBUG entry 'deb http://security.ubuntu.com/ubuntu natty-security universe' updated to new dist
2011-04-28 17:39:53,784 DEBUG examining: 'deb-src http://security.ubuntu.com/ubuntu maverick-security universe'
2011-04-28 17:39:53,784 DEBUG entry 'deb-src http://security.ubuntu.com/ubuntu natty-security universe' updated to new dist
2011-04-28 17:39:53,784 DEBUG examining: 'deb http://security.ubuntu.com/ubuntu maverick-security multiverse'
2011-04-28 17:39:53,784 DEBUG entry 'deb http://security.ubuntu.com/ubuntu natty-security multiverse' updated to new dist
2011-04-28 17:39:53,785 DEBUG examining: 'deb-src http://security.ubuntu.com/ubuntu maverick-security multiverse'
2011-04-28 17:39:53,785 DEBUG entry 'deb-src http://security.ubuntu.com/ubuntu natty-security multiverse' updated to new dist
2011-04-28 17:39:53,785 DEBUG examining: 'deb http://packages.medibuntu.org/ maverick free non-free #Medibuntu - Ubuntu 10.10 "maverick meerkat"'
2011-04-28 17:39:53,789 DEBUG entry '# deb http://packages.medibuntu.org/ natty free non-free #Medibuntu - Ubuntu 10.10 "maverick meerkat" disabilitato durante l'avanzamento a natty' was disabled (unknown mirror)
2011-04-28 17:39:53,789 DEBUG examining: 'deb http://ppa.launchpad.net/mozillateam/firefox-stable/ubuntu maverick main'
2011-04-28 17:39:53,793 DEBUG entry '# deb http://ppa.launchpad.net/mozillateam/firefox-stable/ubuntu natty main # disabilitato durante l'avanzamento a natty' was disabled (unknown mirror)
2011-04-28 17:39:53,794 DEBUG examining: 'deb-src http://ppa.launchpad.net/mozillateam/firefox-stable/ubuntu maverick main'
2011-04-28 17:39:53,798 DEBUG entry '# deb-src http://ppa.launchpad.net/mozillateam/firefox-stable/ubuntu natty main # disabilitato durante l'avanzamento a natty' was disabled (unknown mirror)
2011-04-28 17:40:00,196 DEBUG running doUpdate() (showErrors=True)
2011-04-28 17:40:47,728 DEBUG openCache()
2011-04-28 17:40:47,728 DEBUG failed to SystemUnLock() (E:Non bloccato)
2011-04-28 17:40:48,281 DEBUG /openCache(), new cache size 1489
2011-04-28 17:40:48,281 DEBUG needServerMode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2011-04-28 17:40:48,281 ERROR No 'ubuntu-minimal' available/downloadable after sources.list rewrite+update
2011-04-28 17:44:12,604 DEBUG abort called
2011-04-28 17:44:12,606 DEBUG openCache()
2011-04-28 17:44:12,607 DEBUG failed to SystemUnLock() (E:Non bloccato)
2011-04-28 17:44:16,400 DEBUG /openCache(), new cache size 32332
2011-04-28 17:44:16,416 DEBUG enabling apt cron job

term.log:
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