title: Pip requirements outputting global packages
body: <p>I have a Virtual env for my django project, but when I hit <code>pip freeze</code>, I get what must be a global site package list, includes too many packages, like ubuntu packages and so much irrelevant stuff. This happens whether virtualenv is active or not. My site packages list looks a bit slim too, so I wonder whether venv has been working at all.</p>
  
  <pre><code>(env)~/code/django/ssc/dev/env/lib/python2.7/site-packages&gt; ls
  django
  Django-1.4-py2.7.egg-info
  easy-install.pth
  pip-1.0.2-py2.7.egg
  setuptools-0.6c11-py2.7.egg
  setuptools.pth
  </code></pre>
  
  <p>What's my problem?</p>