title: Visual Studio 2012 project always out of date (.cs modified)
body: <p>We have one project that is used in nearly all other projects in our solution and for some time the whole solution is always rebuild, because a source file in this one project seems to be modified.</p>
  
  <blockquote>
    <p>1>Project 'Utilities' is not up to date. Input file '[...]\utilities\logging\result.cs' is modified after output file '[...]bin\Debug\Utilities.pdb'.</p>
  </blockquote>
  
  <p>But the file isn't modified at all nor any other file in this project.</p>
  
  <p>Has anyone a hint for me where the problem could be located? Thanks in advance!</p>