title: window.load doesn't fire always on chrome?
body: <p>I have this userscript:</p>
  
  <pre><code>// ==UserScript==
  // @name          test
  // @namespace     test
  // @description   show's an alert on load
  // @include       http://*
  // @include       https://*
  // ==/UserScript==
  
  window.addEventListener('load', function(){alert("loaded");}, false);
  </code></pre>
  
  <p>This works fine on Firefox on all pages but doesn't work at all on Chrome at some occasions.</p>
  
  <p>One example is this website: <a href="http://lexin.nada.kth.se/lexin/" rel="nofollow">http://lexin.nada.kth.se/lexin/</a>
  Entering the link in the address and hitting enter, loads the page normally but no alert is popped up. If you press F5 to refresh the page, the popup appears.</p>
  
  <p>Is there some explanation to this weird behaviour?</p>