package libc6 2.15-0ubuntu18 failed to install/upgrade: subprocess new pre-installation script returned error exit status 2

[NoahY]

upgrade from 12.04 to 12.10

ProblemType: Package
DistroRelease: Ubuntu 12.10
Package: libc6 2.15-0ubuntu18
ProcVersionSignature: Ubuntu 3.5.0-15.22-generic 3.5.4
Uname: Linux 3.5.0-15-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.5.2-0ubuntu4
Architecture: amd64
Date: Mon Sep 24 22:06:22 2012
DpkgTerminalLog:
 Preparing to replace libc6:amd64 2.15-0ubuntu10.1 (using .../libc6_2.15-0ubuntu18_amd64.deb) ...
 De-configuring libc6:i386 ...
 dpkg: error processing /var/cache/apt/archives/libc6_2.15-0ubuntu18_amd64.deb (--unpack):
  subprocess new pre-installation script returned error exit status 2
DuplicateSignature:
 De-configuring libc6:i386 ...
 dpkg: error processing /var/cache/apt/archives/libc6_2.15-0ubuntu18_amd64.deb (--unpack):
  subprocess new pre-installation script returned error exit status 2
ErrorMessage: subprocess new pre-installation script returned error exit status 2
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: eglibc
Title: package libc6 2.15-0ubuntu18 failed to install/upgrade: subprocess new pre-installation script returned error exit status 2
UpgradeStatus: Upgraded to quantal on 2012-09-24 (0 days ago)

[dino99 (9d9)]

This is no more a supported version now