title: iPhone SDK: Navigation is causing crash
body: <p>My app is crashing when I navigate two view controllers in my application. For example, if I do this sequence:</p>
  
  <p>RootController
  ViewControllerA<br>
  ViewControllerB 
  ViewControllerA</p>
  
  <p>My app crashes.</p>
  
  <p>It crashes when I pressed the back button in ViewControllerB. So, It seems like it is with two or more ViewControllers being pushed. Each by themselves work.</p>
  
  <p>I don't know why.</p>
  
  <pre><code>This is the code I am using to invoke new views.
  
      salesViewController *anotherViewController = [[salesViewController alloc] initWithNibName:@"salesView" bundle:nil];
      //confirmViewController *anotherViewController = [[confirmViewController alloc] initWithNibName:@"confirmView" bundle:nil];
  
      [self.navigationController pushViewController:anotherViewController animated:YES];
      [anotherViewController release];
  </code></pre>
  
  <p>Thanks in advance.</p>