title: Is this crash caused by me or UIKit itself?
body: <p>This crash report is really tough for me to get a handle on. I've seen it every now and then, and its been pretty impossible to fix given that it doesn't really give me any references to my code to work from. </p>
  
  <p>Is this a crash that was caused by Apple and I don't have to worry about it?</p>
  
  <pre><code>Date/Time:       2013-02-26 03:49:36 +0000
  OS Version:      iPhone OS 6.1.2 (10B146)
  Report Version:  104
  
  Exception Type:  SIGTRAP
  Exception Codes: #0 at 0x33973d24
  Crashed Thread:  0
  
  Thread 0 Crashed:
  0   CoreFoundation                      0x33973d24 CFRetain + 8
  1   UIKit                               0x359484f9 -[UIKeyboardCache displayView:imageWidth:withKey:fromLayout:] + 297
  2   UIKit                               0x359483c7 -[UIKeyboardCache displayView:withKey:fromLayout:] + 91
  3   UIKit                               0x35947b5b -[UIKBKeyplaneView displayLayer:] + 191
  4   QuartzCore                          0x355f34f7 CA::Layer::display() + 95
  5   QuartzCore                          0x355ea93b CA::Layer::display_if_needed(CA::Transaction*) + 203
  6   QuartzCore                          0x355ea865 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 25
  7   QuartzCore                          0x355ea243 CA::Context::commit_transaction(CA::Transaction*) + 239
  8   QuartzCore                          0x355ea051 CA::Transaction::commit() + 317
  9   QuartzCore                          0x355e9eb1 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 61
  10  CoreFoundation                      0x33a096cd __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 21
  11  CoreFoundation                      0x33a079c1 __CFRunLoopDoObservers + 277
  12  CoreFoundation                      0x33a07d17 __CFRunLoopRun + 743
  13  CoreFoundation                      0x3397aebd CFRunLoopRunSpecific + 357
  14  CoreFoundation                      0x3397ad49 CFRunLoopRunInMode + 105
  15  GraphicsServices                    0x3753c2eb GSEventRunModal + 75
  16  UIKit                               0x35890301 UIApplicationMain + 1121
  17  MyApp                               0x0004e60f main (main.m:16)
  
  Thread 1:
  0   libsystem_kernel.dylib              0x3bbbc648 kevent64 + 24
  1   libdispatch.dylib                   0x3bae7df8 _dispatch_mgr_thread$VARIANT$up + 36
  
  Thread 2:
  0   libsystem_kernel.dylib              0x3bbbbeb4 mach_msg_trap + 20
  1   CoreFoundation                      0x33a09045 __CFRunLoopServiceMachPort + 129
  2   CoreFoundation                      0x33a07da3 __CFRunLoopRun + 883
  3   CoreFoundation                      0x3397aebd CFRunLoopRunSpecific + 357
  4   CoreFoundation                      0x3397ad49 CFRunLoopRunInMode + 105
  5   WebCore                             0x3996f505 RunWebThread(void*) + 445
  6   libsystem_c.dylib                   0x3bb25311 _pthread_start + 309
  
  Thread 3:
  0   libsystem_kernel.dylib              0x3bbbbeb4 mach_msg_trap + 20
  1   CoreFoundation                      0x33a09045 __CFRunLoopServiceMachPort + 129
  2   CoreFoundation                      0x33a07da3 __CFRunLoopRun + 883
  3   CoreFoundation                      0x3397aebd CFRunLoopRunSpecific + 357
  4   CoreFoundation                      0x3397ad49 CFRunLoopRunInMode + 105
  5   Foundation                          0x3429df97 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 255
  6   Foundation                          0x34341865 -[NSRunLoop(NSRunLoop) run] + 81
  7   MyApp                               0x0003f7b5 +[AFURLConnectionOperation networkRequestThreadEntryPoint:] (AFURLConnectionOperation.m:161)
  8   Foundation                          0x3434ae85 __NSThread__main__ + 973
  9   libsystem_c.dylib                   0x3bb25311 _pthread_start + 309
  
  Thread 4:
  0   libsystem_kernel.dylib              0x3bbbbeb4 mach_msg_trap + 20
  1   CoreFoundation                      0x33a09045 __CFRunLoopServiceMachPort + 129
  2   CoreFoundation                      0x33a07da3 __CFRunLoopRun + 883
  3   CoreFoundation                      0x3397aebd CFRunLoopRunSpecific + 357
  4   CoreFoundation                      0x3397ad49 CFRunLoopRunInMode + 105
  5   Foundation                          0x342c73d5 +[NSURLConnection(Loader) _resourceLoadLoop:] + 309
  6   Foundation                          0x3434ae85 __NSThread__main__ + 973
  7   libsystem_c.dylib                   0x3bb25311 _pthread_start + 309
  
  Thread 5:
  0   libsystem_kernel.dylib              0x3bbcc594 __select + 20
  1   libsystem_c.dylib                   0x3bb25311 _pthread_start + 309
  
  Thread 6:
  0   libsystem_kernel.dylib              0x3bbcc08c __psynch_cvwait + 24
  1   libsystem_c.dylib                   0x3bb1daa5 pthread_cond_timedwait + 45
  2   JavaScriptCore                      0x37932c75 WTF::ThreadCondition::timedWait(WTF::Mutex&amp;, double) + 109
  3   JavaScriptCore                      0x37a44557 JSC::BlockAllocator::blockFreeingThreadMain() + 83
  4   JavaScriptCore                      0x37a56fab WTF::wtfThreadEntryPoint(void*) + 15
  5   libsystem_c.dylib                   0x3bb25311 _pthread_start + 309
  
  Thread 7:
  0   libsystem_kernel.dylib              0x3bbbbeb4 mach_msg_trap + 20
  1   CoreFoundation                      0x33a09045 __CFRunLoopServiceMachPort + 129
  2   CoreFoundation                      0x33a07da3 __CFRunLoopRun + 883
  3   CoreFoundation                      0x3397aebd CFRunLoopRunSpecific + 357
  4   CoreFoundation                      0x3397ad49 CFRunLoopRunInMode + 105
  5   AudioToolbox                        0x3345c703 GenericRunLoopThread::Entry(void*) + 139
  6   AudioToolbox                        0x3343d885 CAPThread::Entry(CAPThread*) + 297
  7   libsystem_c.dylib                   0x3bb25311 _pthread_start + 309
  
  Thread 8:
  0   libsystem_kernel.dylib              0x3bbccd98 __workq_kernreturn + 8
  1   libsystem_c.dylib                   0x3bb1aa16 _pthread_wqthread + 366
  
  Thread 9:
  0   libsystem_kernel.dylib              0x3bbccd98 __workq_kernreturn + 8
  1   libsystem_c.dylib                   0x3bb1aa16 _pthread_wqthread + 366
  </code></pre>