title: iphone-startup screen: any way to manage control time(3-4 sec) in displaying Default.png
body: <p>i have used simple Default.png for startup screen.and it is working fine.But it disappears very soonIt want it to be on screen atleast 3-4 seconds .Any way to use timer or i have to use an image view for splash screen.
  While searching on forums i also found that it is discouraged in Apple HUman Interface guidelines.
  Help please!
  Thanks.</p>