title: Trackpad gesture to switch to header/source
body: <p>I used to be able to use three finger scroll-up to switch between source/header.  Since upgrading to Lion, I it just does a regular scroll.  Is there any way to get that feature back?</p>
  
  <p>Aka, it doesn't jump to counterpart when I scroll up / down like it used to.</p>
  
  <h2>Update</h2>
  
  <p>Apple fixed the issue in Xcode 4.2.  So, upgrade your versions.</p>