title: jquery .ajax request blocked by long running .ajax request
body: <p>I am trying to use jQuery's .ajax functionality to make a progress bar.</p>
  
  <p>A request is submited via .ajax, which starts a long running process. Once submited another .ajax request is called on an interval which checks the progress of this process. Then a progress meter is updated using this information.</p>
  
  <p>However, the progress .ajax call only returns once the long running process has completed. Its like its being blocked by the initial request.</p>
  
  <p>The weird thing is this process works fine on dev but is failing on the deployment server.  I am running on IIS using ASP.Net MVC.</p>
  
  <p><strong>Update: Apparently, it is browser related because it is working fine on IE 7 but is not working on IE 8.  This is strange because IE 8 allows up to 6 connections on broadband where IE 7 only allows 2 requests per domain.</strong></p>
  
  <p><strong>Update2: I think it's a local issue because it appears to be working fine on another IE 8 machine.</strong></p>