Every time I turn the page in my app, I am removing and releasing the previous viewController - but for some reason it is still in memory. I know this, because after using the app for a while, I get 47 memory warnings - one from each view controller - if I had opened 47 pages before the memory warning occurred. I get 60 memory warnings if I had opened 60 pages before the memory warning occurred. And so on...

This is the code that runs from page to page:

UIViewController *nextController;
Class nextClass = [pageClasses objectAtIndex:(currentPageIndex - 1)];
nextController = [[nextClass alloc] initWithNibName:[pageNibs objectAtIndex:(currentPageIndex - 1)] bundle:nil];
[nextController performSelector:@selector(setDelegate:) withObject:self];

[currentPageController.view removeFromSuperview];
[self.view addSubview:nextController.view];

[currentPageController release];
currentPageController = nextController;
[currentPageController retain];
[nextController release];

Can anybody point to any issues they see?

Thanks so much!