package openjdk-6-jre-headless 6b22-1.10.2-0ubuntu1~11.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

.java (binary) file existed in /etc and java update couldn't complete because it wanted to create a directory
I renamed the /etc/.java file to /etc/.java-old ( mv /etc/.java /etc/.java-old ) and the update succeeded.

I still have a copy of the old .java file if it's needed.

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: openjdk-6-jre-headless 6b22-1.10.2-0ubuntu1~11.04.1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Fri Jul 1 07:42:55 2011
DpkgTerminalLog:
 Setting up openjdk-6-jre-headless (6b22-1.10.2-0ubuntu1~11.04.1) ...
 mkdir: cannot create directory `/etc/.java': File exists
 dpkg: error processing openjdk-6-jre-headless (--configure):
  subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
SourcePackage: openjdk-6
Title: package openjdk-6-jre-headless 6b22-1.10.2-0ubuntu1~11.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to natty on 2011-04-29 (62 days ago)