title: NuGet staying 'Retrieving Information' or 'No results found' in VS 2013
body: <p>All of a sudden, NuGet stopped working for all projects.  I've tried it on 4 different computers in the office, and all of them stopped working.</p>
  
  <p>If I go to 'Manage NuGet Packages', it says 'No items found' when the node <code>Online &gt; nuget.org</code> is selected.  </p>
  
  <p>This was working some time ago I last checked, and all of a sudden it stopped. Any ideas?</p>
  
  <p>I am using Visual Studio 2013.  I've tried removing and reinstalling NuGet from Tools &amp; Extensions, to no avail.</p>