Merci pour ta réponse, petit éclaircissement :
Qu’est ce qu’un backport et où puis-je récupéré l’URL
Le pinning est-il lié au fichier preferences si oui voici le mien :
Package: *
Pin: release o=volatile.debian.org,a=stable,l=debian-volatile
Pin-Priority: 990
Package: *
Pin: release o=Debian,a=stable,l=Debian-Security
Pin-Priority: 990
Package: *
Pin: release o=Unofficial Multimedia Packages,a=stable,l=Unofficial Multimedia Packages
Pin-Priority: 990
Package: *
Pin: release o=Debian,a=stable,l=Debian
Pin-Priority: 990
Package: *
Pin: release o=Debian,a=testing,l=Debian-Security
Pin-Priority: 989
Package: *
Pin: release o=Unofficial Multimedia Packages,a=testing,l=Unofficial Multimedia Packages
Pin-Priority: 989
Package: *
Pin: release o=Debian,a=testing,l=Debian
Pin-Priority: 989
Package: *
Pin: release o=Unofficial Multimedia Packages,a=unstable,l=Unofficial Multimedia Packages
Pin-Priority: 96
Package: *
Pin: release o=Debian,a=unstable,l=Debian
Pin-Priority: 95
Package: *
Pin: release o=Unofficial Multimedia Packages,a=experimental,l=Unofficial Multimedia Packages
Pin-Priority: 94
Package: *
Pin: release o=Debian,a=experimental,l=Debian
Pin-Priority: 93
Package: *
Pin: release a=lenny-backports
Pin-Priority: 200
Je suis en version Debian squeeze/sid \n \l
Cordialement,
Azigui