package libldap-2.4-2 (not installed) failed to install/upgrade: trying to overwrite shared '/etc/ldap/ldap.conf', which is different from other instances of package libldap-2.4-2:amd64

Release 13.04 Ubuntu in virtualbox as guest

ProblemType: Package
DistroRelease: Ubuntu 13.04
Package: libldap-2.4-2 (not installed)
ProcVersionSignature: Ubuntu 3.8.0-32.47-generic 3.8.13.10
Uname: Linux 3.8.0-32-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.5
Architecture: amd64
Date: Sun Nov 17 09:10:48 2013
DuplicateSignature: package:libldap-2.4-2:(not installed):trying to overwrite shared '/etc/ldap/ldap.conf', which is different from other instances of package libldap-2.4-2:amd64
ErrorMessage: trying to overwrite shared '/etc/ldap/ldap.conf', which is different from other instances of package libldap-2.4-2:amd64
InstallationDate: Installed on 2013-10-21 (26 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: openldap
Title: package libldap-2.4-2 (not installed) failed to install/upgrade: trying to overwrite shared '/etc/ldap/ldap.conf', which is different from other instances of package libldap-2.4-2:amd64
UpgradeStatus: No upgrade log present (probably fresh install)