title: WebClient default timeout?
body: <p>I see the post from <a href="https://stackoverflow.com/questions/6262547/webclient-timeout-error">https://stackoverflow.com/questions/6262547/webclient-timeout-error </a>  , it says the default timeout is 100 seconds. But I see the comment from <a href="https://stackoverflow.com/questions/1789627/how-to-change-the-timeout-on-a-net-webclient-object">How to change the timeout on a .NET WebClient object</a> says</p>
  
  <blockquote>
    <p>The default timeout is 100 seconds. Although it seems to run for 30 seconds. – Carter Dec 13 '12 at 16:39</p>
  </blockquote>
  
  <p>In my program the timeout always about 20 seconds, does anybody know the reason?</p>