title: When I tell VS to debug, and it says "Validating Web Site" for 10 minutes, what is it doing exactly?
body: <p>This drives me nuts.  I have one third-party product in particular that has about 11,000 files in one of the directories.  On sites using this system, from the time when I press the "Play" button to the time when it gets done "Validating Web Site" and recursing through the directory tree, it can often be 10 full minutes.</p>
  
  <p>What is VS doing, and can I prevent this delay in some way?</p>
  
  <p>This is a Web <em>site</em> project (not a Web application project).</p>