title: Firebug - Break on Error - d is undefined
body: <p>I've created a website that used to work fine. But now Firebug throws me an error while loading:</p>
  
  <p>Break on Error - d is undefined (in jquery, gets loade from the google CDN)</p>
  
  <p>if i turn off firebug and reload the page everything works just fine.</p>
  
  <p>the site is now at <a href="http://www.optiekmeulemeester.be/test" rel="nofollow noreferrer">http://www.optiekmeulemeester.be/test</a> and I wanna hear if other get the same error and what can I do about it?</p>
  
  <p>thanks in advance</p>