title: iOS backboardd crash while pressing Home button on my App
body: <p>I'm using XCode 4.6.2 and am building for target 5.0 and above. My iPhone App is crashing in various screens when Home button is pressed. The crash log indicates 'backboardd' has crashed . In fact I don't see any log related to my APP. I can only reproduce this issue on device, and never on simulator. I commented out all the code in applicationDidEnterBackground() delegate, but the crash is still reproducible. Here's a snippet of the crash log. Any suggestions on what can be the reason for backboardd crash or any pointers - where else can I look ? </p>
  
  <p>Exception Type:  EXC_CRASH (SIGABRT)
  Exception Codes: 0x0000000000000000, 0x0000000000000000
  Crashed Thread:  11</p>
  
  <pre><code>Last Exception Backtrace:
  0   CoreFoundation                  0x32c2529e __exceptionPreprocess + 158
  1   libobjc.A.dylib                 0x3a8ca97a objc_exception_throw + 26
  2   CoreFoundation                  0x32b7d2fa -[__NSSetM addObject:] + 582
  3   backboardd                      0x000ee49e 0xd8000 + 91294
  4   backboardd                      0x000ee7a8 0xd8000 + 92072
  5   backboardd                      0x000eeb1e 0xd8000 + 92958
  6   backboardd                      0x000ed7cc 0xd8000 + 88012
  7   backboardd                      0x000efdc6 0xd8000 + 97734
  8   backboardd                      0x000f05a4 0xd8000 + 99748
  9   backboardd                      0x000f6e3e 0xd8000 + 126526
  10  backboardd                      0x000f6d2e 0xd8000 + 126254
  </code></pre>
  
  <p>Thanks !</p>