package libc6 2.15-0ubuntu10 failed to install/upgrade: le sous-processus nouveau script pre-installation a retourné une erreur de sortie d'état 1

[kakouares]

This is a new error after :
sudo apt-get purge samba libwbclient0
apt-get update
apt-get upgrade
apt-get install -f

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libc6 2.15-0ubuntu10
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Uname: Linux 3.2.0-25-generic i686
ApportVersion: 2.0.1-0ubuntu11
Architecture: i386
Date: Sun Sep 30 11:18:02 2012
ErrorMessage: le sous-processus nouveau script pre-installation a retourné une erreur de sortie d'état 1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
SourcePackage: eglibc
Title: package libc6 2.15-0ubuntu10 failed to install/upgrade: le sous-processus nouveau script pre-installation a retourné une erreur de sortie d'état 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.