package m4 1.4.16-2ubuntu1 failed to install/upgrade: package m4 is already installed and configured

[xbri]

When I boot time to bring up the system error,but does not affect

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: m4 1.4.16-2ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-41.66-generic 3.2.42
Uname: Linux 3.2.0-41-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.2
Architecture: amd64
Date: Wed May 8 12:47:17 2013
DuplicateSignature:
 Unpacking replacement git ...
 dpkg: error processing m4 (--configure):
  package m4 is already installed and configured
ErrorMessage: package m4 is already installed and configured
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
SourcePackage: dpkg
Title: package m4 1.4.16-2ubuntu1 failed to install/upgrade: package m4 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.