title: long delays in AcquireRequestState
body: <p>Using performance monitoring tool "New Relic" I am seeing occasional (but too many) long delays in the "AcquireRequestState".  I am talking about 10, 20 second delays, sometimes minutes.</p>
  
  <p>I know we have not written our own event handlers for this event.  </p>
  
  <p>Where do I even begin looking for the cause of these delays?  The little information I have found so far on msdn has not been helpful.</p>