title: iPhone - UIWebView multiple locks
body: <p>I receive the following error message in my debugger console:</p>
  
  <pre><code>bool _WebTryThreadLock(bool), 0x7400460: Multiple locks on web thread not allowed! Please file a bug. Crashing now...
  </code></pre>
  
  <p>This occurs when I:</p>
  
  <ol>
  <li>Load an UIViewController</li>
  <li>Load an UIWebView from within this UIViewController</li>
  <li>Then I push a second UIViewController from the first UIViewController</li>
  <li>Load a second UIWebView from within the second UIViewController</li>
  </ol>
  
  <p>I believe this has something to do with access to the UIWebView resource, but I´m really not sure.</p>
  
  <p>Can anyone help me with this error?</p>