While attempting an update dpkg failed with error

[Bill Risch]

A copy of the C library was found in an unexpected directory:
  '/lib/x86_64-linux-gnu/libm-2.17.so.dpkg-new'
It is not safe to upgrade the C library in this situation;
please remove that copy of the C library or get it out of
'/lib/x86_64-linux-gnu' and try again.

dpkg: error processing /var/cache/apt/archives/libc6_2.17-0ubuntu5_amd64.deb (--unpack):
 subprocess new pre-installation script returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/libc6_2.17-0ubuntu5_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: dpkg 1.16.10ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-17.27-generic 3.8.6
Uname: Linux 3.8.0-17-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
Date: Sun Apr 21 07:14:05 2013
InstallationDate: Installed on 2012-10-23 (179 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: dpkg
UpgradeStatus: No upgrade log present (probably fresh install)

[dino99 (9d9)]

This is no more a supported version now