adduser returned error code 1 - when installing minidlna

I'm getting below error when installing minidlna. I get the same problem in adduser during mediatomb installation and ssh installation. Please let me know if there is a workaround on this.

Unpacking minidlna (from .../minidlna_1.0.24+dfsg-1_amd64.deb) ...
adduser: `/usr/sbin/useradd -d /var/lib/minidlna -g minidlna -s /usr/sbin/nologin -u 115 minidlna' returned error code 1. Exiting.
dpkg: error processing /var/cache/apt/archives/minidlna_1.0.24+dfsg-1_amd64.deb (--unpack):
 subprocess new pre-installation script returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/minidlna_1.0.24+dfsg-1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

$ lsb_release -a;uname -a; apt-cache policy minidlna
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu quantal quetzal
Release: 12.10
Codename: quantal
Linux Naresh 3.5.0-26-generic #42-Ubuntu SMP Fri Mar 8 23:18:20 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
minidlna:
  Installed: (none)
  Candidate: 1.0.24+dfsg-1
  Version table:
     1.0.24+dfsg-1 0
        500 http://us.archive.ubuntu.com/ubuntu/ quantal/universe amd64 Packages