package hostname 3.05ubuntu1 failed to install/upgrade: ErrorMessage: package hostname is already installed and configured

[juacompe]

it happened during my upgrade from Natty to

ProblemType: Package
DistroRelease: Ubuntu 11.10
Package: hostname 3.05ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
NonfreeKernelModules: vboxnetadp vboxnetflt vboxdrv fglrx
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Wed Oct 19 14:51:06 2011
ErrorMessage: ErrorMessage: package hostname is already installed and configured
SourcePackage: dpkg
Title: package hostname 3.05ubuntu1 failed to install/upgrade: ErrorMessage: package hostname is already installed and configured
UpgradeStatus: Upgraded to oneiric on 2011-10-18 (0 days ago)

[Raphaël Hertzog (hertzog)]

The underlying problem is this one. Reassigning to libpam0g.

Setting up libpam0g (1.1.3-2ubuntu1) ...

Checking for services that may need to be restarted...Checking init scripts...

WARNING: init script for samba not found.

dpkg: error processing libpam0g (--configure):

 subprocess installed post-installation script returned error exit status 1

Errors were encountered while processing:

 libpam0g