package libnss3-nssdb 2:3.17.4-0ubuntu0.14.04.1 failed to install/upgrade: failed to stat (dereference) existing symlink `/usr/share/doc/libnss3-nssdb/changelog.Debian.gz': Input/output error

[Alexander Gurney]

My hard drive only had 2GB available when I last saw this error, and may have been completely full the first time I saw this error

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: libnss3-nssdb 2:3.17.4-0ubuntu0.14.04.1
ProcVersionSignature: Ubuntu 3.13.0-57.95-generic 3.13.11-ckt21
Uname: Linux 3.13.0-57-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.11
AptOrdering:
 libnss3-nssdb: Install
 libnss3: Install
 libnss3-nssdb: Configure
 libnss3: Configure
Architecture: amd64
Date: Mon Jul 20 14:21:32 2015
DpkgTerminalLog:
 Preparing to unpack .../libnss3-nssdb_2%3a3.19.2-0ubuntu0.14.04.1_all.deb ...
 Unpacking libnss3-nssdb (2:3.19.2-0ubuntu0.14.04.1) over (2:3.17.4-0ubuntu0.14.04.1) ...
 dpkg: error processing archive /var/cache/apt/archives/libnss3-nssdb_2%3a3.19.2-0ubuntu0.14.04.1_all.deb (--unpack):
  failed to stat (dereference) existing symlink `/usr/share/doc/libnss3-nssdb/changelog.Debian.gz': Input/output error
DuplicateSignature: package:libnss3-nssdb:2:3.17.4-0ubuntu0.14.04.1:failed to stat (dereference) existing symlink `/usr/share/doc/libnss3-nssdb/changelog.Debian.gz': Input/output error
ErrorMessage: failed to stat (dereference) existing symlink `/usr/share/doc/libnss3-nssdb/changelog.Debian.gz': Input/output error
InstallationDate: Installed on 2015-01-18 (184 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
SourcePackage: nss
Title: package libnss3-nssdb 2:3.17.4-0ubuntu0.14.04.1 failed to install/upgrade: failed to stat (dereference) existing symlink `/usr/share/doc/libnss3-nssdb/changelog.Debian.gz': Input/output error
UpgradeStatus: Upgraded to trusty on 2015-07-08 (12 days ago)