title: UIScrollView scrollEnabled does not stop two finger gestures
body: <p>The <code>UIScrollView</code> property <code>scrollEnabled</code> stops one finger gestures but multiple finger gestures seem still to work albeit with the error message</p>
  
  <blockquote>
    <p>Ignoring call to [UIPanGestureRecognizer setTranslation:inView:] since
    gesture recognizer is not active.</p>
  </blockquote>
  
  <p>Is this bad? Am I doing something wrong? <code>canCancelContentTouches</code> seems to stop the action but the error message remains. Can I thus ask</p>
  
  <ol>
  <li>should I worry about the the error message?</li>
  <li>is <code>canCancelContentTouches</code> the best way to cancel all scroll actions?</li>
  <li>what am I doing wrong?</li>
  </ol>