package libqt4-dbus:i386 4:4.8.7+dfsg-5ubuntu2 failed to install/upgrade: package libqt4-dbus:i386 is already installed and configured

[Oleg Mavlyutov]

1. Ubuntu 16.04 LTS
2. 4:4.8.7+dfsg-5ubuntu2 500
        500 http://ru.archive.ubuntu.com/ubuntu xenial/main i386 Packages
        100 /var/lib/dpkg/status
3. I don't expect anything.
4. I just recieved the error message

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libqt4-dbus:i386 4:4.8.7+dfsg-5ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-78.99-generic 4.4.62
Uname: Linux 4.4.0-78-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
Date: Thu May 18 20:46:04 2017
DuplicateSignature:
 package:libqt4-dbus:i386:4:4.8.7+dfsg-5ubuntu2
 Processing triggers for hicolor-icon-theme (0.15-0ubuntu1) ...
 dpkg: error processing package libqt4-xml:i386 (--configure):
  package libqt4-xml:i386 is already installed and configured
ErrorMessage: package libqt4-dbus:i386 is already installed and configured
InstallationDate: Installed on 2016-09-09 (251 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: i386
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.20
SourcePackage: dpkg
Title: package libqt4-dbus:i386 4:4.8.7+dfsg-5ubuntu2 failed to install/upgrade: package libqt4-dbus:i386 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)