[iPhone] Releasing a UIWebView thats loading

I'm having a bit of a problem here where I have a UIWebView inside of a UIViewController.
Basically what happens is the request starts the load, but if the user clicks back on the navigation bar before the UIWebView is done loading, the app crashes throwing a EXCBADACCESS error when trying to send the delegate notification.
I've set the delegate to nil in my dealloc method, and sent stopLoading to the UIWebView before releasing it, however it still tries to continue to load and then ends up crashing the app once it finishes loading.
Can anyone offer any insight here?
Thanks!

I figured this out, for anyone else who might have this problem:
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[webView stopLoading];

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