unresolvable problem on dist upgrade 8.10 to 9.04

[mjschmidt]

Binary package hint: update-manager

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Es konnte nicht ermittelt werden, welche Aktualisierungen verfügbar sind
An unresolvable problem occured while calculation the upgrade: E:Kann Probleme nicht korrigieren, Sie haben gehaltene defekte Pakete. This can be caused by : * Upgrading to a pre-release version of Ubuntu * Running the current pre-release version of Ubuntu * Unoffical software packages not provided by Ubuntu Falls nichts davon zutrifft melden Sie dies bitte als Fehler im paket "update-manager" und fügen Sie die Dateien aus dem Ordner /var/log/dist-upgrade Ihrem Fehlerbericht hinzu.
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~$lsb_release -rd
Description: Ubuntu 8.10
Release: 8.10

~$apt-cache policy
Paketdateien:
 100 /var/lib/dpkg/status
     release a=now
 500 http://security.ubuntu.com jaunty-security/multiverse Packages
     release v=9.04,o=Ubuntu,a=jaunty-security,l=Ubuntu,c=multiverse
     origin security.ubuntu.com
 500 http://security.ubuntu.com jaunty-security/universe Packages
     release v=9.04,o=Ubuntu,a=jaunty-security,l=Ubuntu,c=universe
     origin security.ubuntu.com
 500 http://security.ubuntu.com jaunty-security/restricted Packages
     release v=9.04,o=Ubuntu,a=jaunty-security,l=Ubuntu,c=restricted
     origin security.ubuntu.com
 500 http://security.ubuntu.com jaunty-security/main Packages
     release v=9.04,o=Ubuntu,a=jaunty-security,l=Ubuntu,c=main
     origin security.ubuntu.com
 500 http://archive.canonical.com jaunty/partner Packages
     release v=9.04,o=Ubuntu,a=jaunty,l=Ubuntu,c=partner
     origin archive.canonical.com
 500 http://de.archive.ubuntu.com jaunty-updates/multiverse Packages
     release v=9.04,o=Ubuntu,a=jaunty-updates,l=Ubuntu,c=multiverse
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com jaunty-updates/universe Packages
     release v=9.04,o=Ubuntu,a=jaunty-updates,l=Ubuntu,c=universe
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com jaunty-updates/restricted Packages
     release v=9.04,o=Ubuntu,a=jaunty-updates,l=Ubuntu,c=restricted
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com jaunty-updates/main Packages
     release v=9.04,o=Ubuntu,a=jaunty-updates,l=Ubuntu,c=main
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com jaunty/multiverse Translation-de
 500 http://de.archive.ubuntu.com jaunty/multiverse Packages
     release v=9.04,o=Ubuntu,a=jaunty,l=Ubuntu,c=multiverse
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com jaunty/universe Translation-de
 500 http://de.archive.ubuntu.com jaunty/universe Packages
     release v=9.04,o=Ubuntu,a=jaunty,l=Ubuntu,c=universe
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com jaunty/restricted Translation-de
 500 http://de.archive.ubuntu.com jaunty/restricted Packages
     release v=9.04,o=Ubuntu,a=jaunty,l=Ubuntu,c=restricted
     origin de.archive.ubuntu.com
 500 http://de.archive.ubuntu.com jaunty/main Translation-de
 500 http://de.archive.ubuntu.com jaunty/main Packages
     release v=9.04,o=Ubuntu,a=jaunty,l=Ubuntu,c=main
     origin de.archive.ubuntu.com
Festgehaltene Pakete (»Pin«):