Logithèque Ubuntu ne fonctionne plus

Merci de votre réponse!

Alors,

1/ Je viens d'essayer d'installer un programme avec Synaptic, ça marche. Pour la mise à jour, il y a pas de problèmes.
2/ La commande donne :

Atteint https://launchpad.net lucid Release.gpg
Ign http://ppa.launchpad.net/tualatrix/ppa/ubuntu/ lucid/main Translation-fr
Atteint http://archive.canonical.com lucid Release.gpg
Ign http://archive.canonical.com/ubuntu/ lucid/partner Translation-fr
Atteint http://archive.ubuntu.com lucid Release.gpg
Atteint http://archive.ubuntu.com/ubuntu/ lucid/main Translation-fr
Atteint https://launchpad.net lucid Release
Atteint http://archive.ubuntu.com/ubuntu/ lucid/restricted Translation-fr
Atteint http://archive.ubuntu.com/ubuntu/ lucid/universe Translation-fr
Atteint http://archive.ubuntu.com/ubuntu/ lucid/multiverse Translation-fr
Atteint http://archive.ubuntu.com lucid-updates Release.gpg
Ign http://archive.ubuntu.com/ubuntu/ lucid-updates/main Translation-fr
Atteint http://archive.canonical.com lucid Release
Ign http://archive.ubuntu.com/ubuntu/ lucid-updates/restricted Translation-fr
Ign http://archive.ubuntu.com/ubuntu/ lucid-updates/universe Translation-fr
Ign http://archive.ubuntu.com/ubuntu/ lucid-updates/multiverse Translation-fr
Atteint http://archive.ubuntu.com lucid-security Release.gpg
Ign http://archive.ubuntu.com/ubuntu/ lucid-security/main Translation-fr
Ign http://archive.ubuntu.com/ubuntu/ lucid-security/restricted Translation-fr
Ign http://archive.ubuntu.com/ubuntu/ lucid-security/universe Translation-fr
Ign http://archive.ubuntu.com/ubuntu/ lucid-security/multiverse Translation-fr
Atteint http://archive.ubuntu.com lucid Release
Atteint http://archive.ubuntu.com lucid-updates Release
Atteint https://launchpad.net lucid/main Packages
Atteint http://archive.canonical.com lucid/partner Packages
Atteint http://archive.ubuntu.com lucid-security Release
Atteint http://archive.canonical.com lucid/partner Sources
Atteint http://archive.ubuntu.com lucid/main Packages
Atteint http://archive.ubuntu.com lucid/restricted Packages
Atteint http://archive.ubuntu.com lucid/main Sources
Atteint http://archive.ubuntu.com lucid/restricted Sources
Atteint http://archive.ubuntu.com lucid/universe Packages
Atteint http://archive.ubuntu.com lucid/universe Sources
Atteint http://archive.ubuntu.com lucid/multiverse Packages
Atteint http://archive.ubuntu.com lucid/multiverse Sources
Atteint http://archive.ubuntu.com lucid-updates/main Packages
Atteint http://archive.ubuntu.com lucid-updates/restricted Packages
Atteint http://archive.ubuntu.com lucid-updates/main Sources
Atteint http://archive.ubuntu.com lucid-updates/restricted Sources
Atteint http://archive.ubuntu.com lucid-updates/universe Packages
Atteint http://archive.ubuntu.com lucid-updates/universe Sources
Atteint http://archive.ubuntu.com lucid-updates/multiverse Packages
Atteint http://archive.ubuntu.com lucid-updates/multiverse Sources
Atteint http://archive.ubuntu.com lucid-security/main Packages
Atteint http://archive.ubuntu.com lucid-security/restricted Packages
Atteint http://archive.ubuntu.com lucid-security/main Sources
Atteint http://archive.ubuntu.com lucid-security/restricted Sources
Atteint http://archive.ubuntu.com lucid-security/universe Packages
Atteint http://archive.ubuntu.com lucid-security/universe Sources
Atteint http://archive.ubuntu.com lucid-security/multiverse Packages
Atteint http://archive.ubuntu.com lucid-security/multiverse Sources
Lecture des listes de paquets... Fait