NSC disabled security, dumped in their download, NSC National Safty Commission.

read the log. I was logged out of the terminal.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: arno-iptables-firewall 2.0.0.c-1
ProcVersionSignature: Ubuntu 3.2.0-53.81-generic-pae 3.2.50
Uname: Linux 3.2.0-53-generic-pae i686
NonfreeKernelModules: wl
ApportVersion: 2.0.1-0ubuntu17.4
AptOrdering: arno-iptables-firewall: Configure
Architecture: i386
Date: Thu Aug 29 14:36:53 2013
DuplicateSignature: package:arno-iptables-firewall:2.0.0.c-1:subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: arno-iptables-firewall
Title: package arno-iptables-firewall 2.0.0.c-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)