title: Problems downloading artifact - error reading signed content
body: <p>I was just installing Ubuntu and added Eclipse (Indigo) to it.  When I tried to add <code>pydev</code> to it I kept on getting this kind of error about halfway through the install.  Strangely, when opening Eclipse (Indigo) on my other system on Windows 7 ( I already have PyDev installed here before, so this is supposed to get updates only), I am getting the same error.  See below:</p>
  
  <blockquote>
    <p>Problems downloading artifact: osgi.bundle,org.python.pydev.django,3.0.0.201311051910.
    Error reading signed content:C:\Users\Dan\AppData\Local\Temp\signatureFile7380103325324291237.jar</p>
  </blockquote>
  
  <p>Like, a lot of them.</p>
  
  <p>Do you have any idea about this?</p>
  
  <p>Thanks,
  dh</p>