title: Nuget package update issues
body: <p>I am having problems updating Nuget packages in Visual Studio 2013 for a solution.</p>
  
  <p>I right-clicked the solution, chose "Manage packages for solution", then choose "Update All" in the update tab.</p>
  
  <p>It all seemed to update fine, however, in the update tab, the packages that were updated are still showing as needing to update. If I then go to update them again, the list of projects shows each project that has the package, and each checkbox is disabled, as if it already knows they have been updated. So as far as I can tell, every project has been updated.</p>
  
  <p>I have restarted Visual Studio</p>
  
  <p>Anyone else come across this before?</p>