package libdvdread4 4.2.0+20121016-1ubuntu1 failed to install/upgrade: package libdvdread4 is already installed and configured

just installed, i dont know what is it,

ProblemType: Package
DistroRelease: Ubuntu 13.04
Package: libdvdread4 4.2.0+20121016-1ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-25.37-generic 3.8.13
Uname: Linux 3.8.0-25-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.1
Architecture: amd64
Date: Tue Jun 18 14:06:36 2013
DuplicateSignature: package:libdvdread4:4.2.0+20121016-1ubuntu1:package libdvdread4 is already installed and configured
ErrorMessage: package libdvdread4 is already installed and configured
InstallationDate: Installed on 2013-06-18 (0 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: libdvdread
Title: package libdvdread4 4.2.0+20121016-1ubuntu1 failed to install/upgrade: package libdvdread4 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)