package brltty 4.3-1ubuntu5 failed to install/upgrade: ErrorMessage: failed to read on buffer copy for md5hash: Input/output error

[Michael G. Solomon]

package brltty 4.3-1ubuntu5 failed to install/upgrade: ErrorMessage: failed to read on buffer copy for md5hash: Input/output error

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: brltty 4.3-1ubuntu5
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Sat Apr 28 22:48:29 2012
ErrorMessage: ErrorMessage: failed to read on buffer copy for md5hash: Input/output error
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: brltty
Title: package brltty 4.3-1ubuntu5 failed to install/upgrade: ErrorMessage: failed to read on buffer copy for md5hash: Input/output error
UpgradeStatus: Upgraded to precise on 2012-04-29 (0 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.]