title: Problem with uiscrollview setcontentoffset animated not scrolling when animated:yes is set
body: <p>This is very odd and I'm wondering if anyone has any thoughts? </p>
  
  <p>I'm trying to scroll a UIScrollView in response to a button press on the iPad. </p>
  
  <p>If I do:</p>
  
  <pre><code>CGPoint currentOff = scrollView.contentOffset;
  currentOff.x+=240;
  [scrollView setContentOffset:currentOff animated: NO];
  </code></pre>
  
  <p>The scroll view jumps to the required position as expected, but I want it to scroll. However, when I do:</p>
  
  <pre><code>CGPoint currentOff = scrollView.contentOffset;
  currentOff.x+=240;
  [scrollView setContentOffset:currentOff animated: YES];
  </code></pre>
  
  <p>Then it doesn't do anything! I have another scroll view which is working properly and responds to <code>setContentOffset:YES</code> as expected, so I am quite puzzled. Any ideas on why scrolling might not happen are most welcome!</p>
  
  <p>Also, <code>- (void)scrollViewDidScroll:(UIScrollView *)sender</code>  is not receiving anything at all when <code>animated:YES</code> is used but is invoked when <code>animated:NO</code> is used!</p>