package apport 2.0.1-0ubuntu14 failed to install/upgrade: failed to read on buffer copy for md5hash: Input/output error

[barb]

installation or removal of software package failed

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: apport 2.0.1-0ubuntu14
ProcVersionSignature: Ubuntu 3.2.0-39.62-generic 3.2.39
Uname: Linux 3.2.0-39-generic x86_64
NonfreeKernelModules: nvidia
ApportLog:

ApportVersion: 2.0.1-0ubuntu14
AptOrdering:
 apport: Configure
 apport-gtk: Configure
Architecture: amd64
CrashReports: 600:0:125:123920:2013-04-08 12:59:55.027258000 -0400:2013-04-08 13:13:20.643258738 -0400:/var/crash/apport.0.crash
Date: Mon Apr 8 12:59:54 2013
ErrorMessage: failed to read on buffer copy for md5hash: Input/output error
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: apport
Title: package apport 2.0.1-0ubuntu14 failed to install/upgrade: failed to read on buffer copy for md5hash: Input/output error
UpgradeStatus: Upgraded to precise on 2012-08-14 (237 days ago)

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that there was an error on your system when trying to install a particular package. Please execute the following command, as it will clear your package cache, in a terminal:

sudo apt-get clean

Then try performing the update again. This will likely resolve your issue, but the failure could be caused by filesystem or memory corruption. So please also run a fsck on your filesystem(s) and a memory test. Thanks in advance!

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]