title: Sub-process /usr/bin/dpkg returned an error code (1)
body: <p>Reading package lists... Done</p>
  
  <p>Building dependency tree       </p>
  
  <p>Reading state information... Done</p>
  
  <pre><code>The following package was automatically installed and is no longer required:
        cordova-ubuntu-2.8-examples
  Use 'apt-get autoremove' to remove it.
      The following NEW packages will be installed:
        mongodb-10gen
      0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
      Need to get 0 B/87.1 MB of archives.
      After this operation, 221 MB of additional disk space will be used.
      (Reading database ... 250020 files and directories currently installed.)
      Unpacking mongodb-10gen (from .../mongodb-10gen_2.4.8_i386.deb) ...
      Obsolete conffile /etc/init.d/mongodb has been modified by you, renaming to .dpkg-bak
      dpkg: error processing /var/cache/apt/archives/mongodb-10gen_2.4.8_i386.deb (--unpack):
       trying to overwrite '/usr/bin/mongos', which is also in package mongodb-10gen-unstable-mongos 2.5.2
      dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
      Errors were encountered while processing:
       /var/cache/apt/archives/mongodb-10gen_2.4.8_i386.deb
      E: Sub-process /usr/bin/dpkg returned an error code (1)
  </code></pre>