iOS reason for crash?

[MACloop]

I become this crash (1) followed by (2) and it occours in various situations. I cannot actually see a distinct pattern to trig the crash. Does anyone know what I should look for if you look at the crash-report? What the problem might be? It happend rather unfrequent and I do not really know where to search... I could be an object called after it has been killed - the question is - if this object is created/killed by me or in some of the frameworks I use?
Thanks in advance!
MACloop

1)

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000b

Crashed Thread:  0
Thread 0 Crashed:
0   libobjc.A.dylib               	0x00003ebc objc_msgSend + 20
1   MapKit                        	0x00032960 -[MKMapView(UserPositioningInternal) locationManagerUpdatedLocation:] + 1032
2   CoreFoundation                	0x0005da0e -[NSObject performSelector:withObject:] + 18
3   CoreFoundation                	0x00062a04 -[NSArray makeObjectsPerformSelector:withObject:] + 368
4   MapKit                        	0x000028e8 -[MKLocationManager _reportLocationStatus:] + 52
5   MapKit                        	0x00004e74 -[MKLocationManager _reportLocationSuccess] + 48
6   MapKit                        	0x000049c0 -[MKLocationManager locationManager:didUpdateToLocation:fromLocation:usingSupportInfo:] + 936
7   CoreLocation                  	0x00009cb0 -[CLLocationManager onClientEventLocation:] + 1132
8   CoreLocation                  	0x000081dc -[CLLocationManager onClientEvent:supportInfo:] + 140
9   CoreLocation                  	0x00008368 OnClientEventInternal + 24
10  CoreLocation                  	0x00006004 CLClientHandleDaemonData(__CFMessagePort*, long, __CFData const*, void*) + 1080
11  CoreFoundation                	0x00030380 __CFMessagePortPerform + 112
12  CoreFoundation                	0x00057524 CFRunLoopRunSpecific + 2296
13  CoreFoundation                	0x00056c18 CFRunLoopRunInMode + 44
14  GraphicsServices              	0x000041c0 GSEventRunModal + 188
15  UIKit                         	0x00003c28 -[UIApplication _run] + 552
16  UIKit                         	0x00002228 UIApplicationMain + 960
17  MyApp1.0                     	0x0000207a 0x1000 + 4218
18  MyApp1.0                     	0x00002024 0x1000 + 4132

2)

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x8003c615
Crashed Thread:  0

Thread 0 Crashed:
0   libobjc.A.dylib               	0x00003ec0 objc_msgSend + 24
1   libobjc.A.dylib               	0x00005b84 objc_setProperty + 184
2   MyApp1.0                     	0x0000f6fa 0x1000 + 59130
3   Foundation                    	0x0005986c _NSSetUsingKeyValueSetter + 116
4   Foundation                    	0x00058ce0 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 96
5   Foundation                    	0x00058c3e -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 250
6   UIKit                         	0x000850d4 -[UIRuntimeOutletConnection connect] + 88
7   CoreFoundation                	0x0005b45c -[NSObject performSelector:] + 12
8   CoreFoundation                	0x000590a4 -[NSArray makeObjectsPerformSelector:] + 368
9   UIKit                         	0x00075a1c -[UINib instantiateWithOptions:owner:loadingResourcesFromBundle:] + 836
10  UIKit                         	0x00075558 -[NSBundle(NSBundleAdditions) loadNibNamed:owner:options:] + 104
11  UIKit                         	0x00089304 -[UIViewController _loadViewFromNibNamed:bundle:] + 48
12  UIKit                         	0x000890b8 -[UIViewController loadView] + 120
13  UIKit                         	0x00069750 -[UIViewController view] + 44
14  UIKit                         	0x00088fd8 -[UIViewController contentScrollView] + 24
15  UIKit                         	0x00088d90 -[UINavigationController _computeAndApplyScrollContentInsetDeltaForViewController:] + 36
16  UIKit                         	0x00088c3c -[UINavigationController _layoutViewController:] + 28
17  UIKit                         	0x0008863c -[UINavigationController _startTransition:fromViewController:toViewController:] + 504
18  UIKit                         	0x000883a8 -[UINavigationController _startDeferredTransitionIfNeeded] + 256
19  UIKit                         	0x00088298 -[UINavigationController viewWillLayoutSubviews] + 12
20  UIKit                         	0x0006c86c -[UILayoutContainerView layoutSubviews] + 76
21  UIKit                         	0x000482d0 -[UIView(CALayerDelegate) _layoutSublayersOfLayer:] + 32
22  QuartzCore                    	0x0000c1b8 -[CALayer layoutSublayers] + 80
23  QuartzCore                    	0x0000bed4 CALayerLayoutIfNeeded + 192
24  QuartzCore                    	0x0000b83c CA::Context::commit_transaction(CA::Transaction*) + 256
25  QuartzCore                    	0x0000b46c CA::Transaction::commit() + 276
26  QuartzCore                    	0x000135d4 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 84
27  CoreFoundation                	0x0000f82a __CFRunLoopDoObservers + 466
28  CoreFoundation                	0x00057340 CFRunLoopRunSpecific + 1812
29  CoreFoundation                	0x00056c18 CFRunLoopRunInMode + 44
30  GraphicsServices              	0x000041c0 GSEventRunModal + 188
31  UIKit                         	0x00003c28 -[UIApplication _run] + 552
32  UIKit                         	0x00002228 UIApplicationMain + 960
33  MyApp1.0                     	0x0000207a 0x1000 + 4218
34  MyApp1.0                     	0x00002024 0x1000 + 4132

 

[MACloop]

Apperently this is another mapKit problem... Is it official that mapKit is a bit buggy? I have only made stabile experiences when using it without navigation controller...

MACloop

 

[PhoneyDeveloper]

Look at

http://www.sealiesoftware.com/blog/...c_explain_So_you_crashed_in_objc_msgSend.html

and

NSZombie