title: matplotlib plot window won't appear
body: <p>I'm using Python 2.7.3 in 64-bit. I installed pandas as well as matplotlib 1.1.1, both for 64-bit. Right now, none of my plots are showing. After attempting to plot from several different dataframes, I gave up in frustration and tried the following first example from <a href="http://pandas.pydata.org/pandas-docs/dev/visualization.html">http://pandas.pydata.org/pandas-docs/dev/visualization.html</a>:</p>
  
  <p><strong>INPUT:</strong></p>
  
  <pre><code>import matplotlib.pyplot as plt
  ts = Series(randn(1000), index=date_range ('1/1/2000', periods=1000))
  ts = ts.cumsum()
  ts.plot()
  pylab.show()
  </code></pre>
  
  <p><strong>OUTPUT:</strong> </p>
  
  <pre><code>Axes(0.125,0.1;0.775x0.8)
  </code></pre>
  
  <p>And no plot window appeared. Other StackOverflow threads I've read suggested I might be missing DLLs. Any suggestions?</p>