title: Multiple Instances of w3wp.exe
body: <p>I don't understand why there are two ASP.NET w3wp processes in Task Manager when I only have one website and one application pool.  Why are there two processes running? I have Googled this and looked on MSDN but cannot find an answer.</p>
  
  <p>I am trying to debug a memory leak in an application. I understand the concept of threading and multiple threads living in a process, but I do not understand why there are multiple processes.</p>
  
  <p>I am specifically asking what scenarios can cause more than one process to run.</p>