Strange iAd Errors with iOS 4.3.3

I've got an app that implements iAds in the way recommended in the "iAd Suite" that Apple provides, but I'm getting some strange behavior when I run the app on my iPhone with iOS 4.3.3

Specifically, although I implement the delegate and implement the following methods

#pragma mark ADBannerViewDelegate methods

-(void)bannerViewDidLoadAd:(ADBannerView *)banner
{
//NSLog(@"LOADING AN AD");
[self layoutForCurrentOrientation:YES];
}

-(void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error
{
[self layoutForCurrentOrientation:YES];
}

-(BOOL)bannerViewActionShouldBegin:(ADBannerView *)banner willLeaveApplication:(BOOL)willLeave
{
return YES;
}

-(void)bannerViewActionDidFinish:(ADBannerView *)banner
{
}

I'm intermittently getting this error.

2011-05-07 16:08:42.207 colescorner[3344:707] -[UIPanGestureRecognizer bannerView:didFailToReceiveAdWithError:]: unrecognized selector sent to instance 0x1c4c70
2011-05-07 16:08:42.387 colescorner[3344:707] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIPanGestureRecognizer bannerView:didFailToReceiveAdWithError:]: unrecognized selector sent to instance 0x1c4c70'
*** Call stack at first throw:
(
0   CoreFoundation                      0x317ac64f __exceptionPreprocess + 114
1   libobjc.A.dylib                     0x352c7c5d objc_exception_throw + 24
2   CoreFoundation                      0x317b01bf -[NSObject(NSObject) doesNotRecognizeSelector:] + 102
3   CoreFoundation                      0x317af649 ___forwarding___ + 508
4   CoreFoundation                      0x31726180 _CF_forwarding_prep_0 + 48
5   iAd                                 0x34fbd785 -[ADBannerView _sanitizeAndForwardErrorToDelegate:] + 44
6   iAd                                 0x34fbbc55 -[ADBannerView controller:didFailWithError:] + 152
7   iAd                                 0x34fc659d -[ADBannerController unloadAndClose] + 60
8   iAd                                 0x34fc04a1 -[ADSession createSession] + 444
9   iAd                                 0x34fbffe7 -[ADSession considerCreatingSessions] + 270
10  iAd                                 0x34fbfa55 __-[ADSession considerCreatingSessions]_block_invoke_2 + 16
11  libdispatch.dylib                   0x360928e7 _dispatch_call_block_and_release + 10
12  libdispatch.dylib                   0x3608e771 _dispatch_after_timer_callback + 12
13  libdispatch.dylib                   0x36090341 _dispatch_source_invoke + 436
14  libdispatch.dylib                   0x3608e041 _dispatch_queue_invoke + 92
15  libdispatch.dylib                   0x3608e1c3 _dispatch_main_queue_callback_4CF$VARIANT$up + 262
16  CoreFoundation                      0x3178693b __CFRunLoopRun + 1334
17  CoreFoundation                      0x31716ec3 CFRunLoopRunSpecific + 230
18  CoreFoundation                      0x31716dcb CFRunLoopRunInMode + 58
19  GraphicsServices                    0x3109541f GSEventRunModal + 114
20  GraphicsServices                    0x310954cb GSEventRun + 62
21  UIKit                               0x3183cd69 -[UIApplication _run] + 404
22  UIKit                               0x3183a807 UIApplicationMain + 670
23  myapp                         0x0000212d main + 48
24  myapp                         0x000020f8 start + 40
)
terminate called after throwing an instance of 'NSException'

Has anyone seen this type of weirdness? The other thing I notice is that I CAN get it to fail using the Simulator (not version iPhone 4.0, 4.1, 4.2).. this ONLY happens when I install to my actual device or run it on the 4.3.3 simulator