View controller not being released by navigation controller for a long time?
<p>I'm doing some debugging and leak checking, so I've got some NSLog output in a few of my app's view controllers and such.  Then I noticed one particular controller appears to be releasing quite a while after the others, even though the navigation controller is popping it off the view stack. Every other view is immediately unloaded and released.  Perplexed.</p>
