title: Understanding applicationSignificantTimeChange:
body: <p>I find that sometimes my application (Cocos2d game) beheaves in a "buggy" way after a significant time change. For example:</p>
  
  <ul>
  <li><strong>case 1:</strong> when the application enters the background and, after several minutes, I restart it, I can see the <strong>loading image</strong> and then the application/game resumes.</li>
  <li><strong>case 2:</strong> when the application enters the background and after a significant time change the application <strong>sometimes restarts, sometimes not.</strong> It is still <strong>unclear to me why.</strong></li>
  </ul>
  
  <p>Looking at the <strong>AppDelegate</strong> methods I found:</p>
  
  <pre><code>// next delta time will be zero
  -(void) applicationSignificantTimeChange:(UIApplication *)application
  {
      [[CCDirector sharedDirector] setNextDeltaTimeZero:YES];
  }
  </code></pre>
  
  <p>I was wondering, <strong>as this affects the director and the director affects the animations, is there a link for between this call and case 1 and case 2?</strong></p>