package icedtea-netx:i386 1.5.1-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

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Login screen fluctuate on reboot

ProblemType: Package
DistroRelease: Ubuntu 14.10
Package: icedtea-netx:i386 1.5.1-1ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
Uname: Linux 3.16.0-25-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
Date: Tue Dec 2 10:05:36 2014
DpkgHistoryLog:
 Start-Date: 2014-12-02 10:04:29
 Commandline: aptdaemon role='role-commit-packages' sender=':1.255'
 Upgrade: ppp:amd64 (2.4.5-5.1ubuntu3, 2.4.5-5.1ubuntu3.1), libglib2.0-0:amd64 (2.42.0-2, 2.42.1-1~ubuntu1), libglib2.0-0:i386 (2.42.0-2, 2.42.1-1~ubuntu1), libglib2.0-data:amd64 (2.42.0-2, 2.42.1-1~ubuntu1), libglib2.0-bin:amd64 (2.42.0-2, 2.42.1-1~ubuntu1)
DuplicateSignature: package:icedtea-netx:i386:1.5.1-1ubuntu1:subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2014-05-25 (190 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: i386
SourcePackage: icedtea-web
Title: package icedtea-netx:i386 1.5.1-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: Upgraded to utopic on 2014-10-25 (37 days ago)