package dnet-common 2.58ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 30

[deertan natur]

I am running Precise Pangolin 64 bit

was installing graphic equalizer for alsa and pulseaudio via synaptic package manager
installed recommended components from pulse equalizer, this was one of them
during installation, this package wanted to change the MAC id's of my NICs
it was during this step that it asked me to name my system
i named it, clicked next, nothing happened...
setup stopped there
i clicked back, setup errored, other packages continued to install
this happened three times, then I got the error report
rebooted, got the error report again upon reboot (after logging in)

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: dnet-common 2.58ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Sat Apr 28 03:13:05 2012
DuplicateSignature:
 Setting up dnet-common (2.58ubuntu1) ...
 dpkg: error processing dnet-common (--configure):
  subprocess installed post-installation script returned error exit status 30
ErrorMessage: subprocess installed post-installation script returned error exit status 30
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
PackageArchitecture: all
SourcePackage: dnprogs
Title: package dnet-common 2.58ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 30
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[v.miheer (v-miheer)]

I was installing cmus. I don't have DECnet. So when i was prompted to enter 'd.dd' format number. I pressed CTRL+C.