title: eclipse 4.3 on mac hangs when turning off validation?
body: <p>I just installed eclipse 4.3 EE version on a mac; and when i go to "preferences" and "validation", and i try to turn off some of the xml validation, clicking on one of the check boxes causes eclipse to simply hang. I get the spinning disk and have to force quit eclipse.</p>
  
  <p>Anybody know of a workaround?</p>