package libnspr4-0d:amd64 2:4.10.7-0ubuntu0.14.04.1 failed to install/upgrade: package libnspr4-0d:amd64 is already installed and configured

I don't know.

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: libnspr4-0d:amd64 2:4.10.7-0ubuntu0.14.04.1
ProcVersionSignature: Ubuntu 3.13.0-40.69-generic 3.13.11.10
Uname: Linux 3.13.0-40-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
AptdaemonVersion: 1.1.1-1ubuntu5.1
Architecture: amd64
Date: Thu Dec 11 13:13:58 2014
Dependencies:
 gcc-4.9-base 4.9.1-0ubuntu1
 libc6 2.19-0ubuntu6.4
 libgcc1 1:4.9.1-0ubuntu1
 libnspr4 2:4.10.7-0ubuntu0.14.04.1
 multiarch-support 2.19-0ubuntu6.4
DuplicateSignature: package:libnspr4-0d:amd64:2:4.10.7-0ubuntu0.14.04.1:package libnspr4-0d:amd64 is already installed and configured
ErrorMessage: package libnspr4-0d:amd64 is already installed and configured
InstallationDate: Installed on 2014-12-07 (3 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: nspr
Title: package libnspr4-0d:amd64 2:4.10.7-0ubuntu0.14.04.1 failed to install/upgrade: package libnspr4-0d:amd64 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)