title: Xcode Debugging process can only be killed by rebooting Mac OS
body: <p>Sometimes Xcode does not stop the debugging process properly and the only way to kill that process seems to be a reboot of the mac. 
  I can not kill it via shell command (kill -9, or actually sudo - kill  -9). I also tried to remove the process from the launchctl table before killing with the command, which also does not work, the command returns 'No such process'.</p>
  
  <p>Is there really no other way than rebooting the system in such a case?? </p>
  
  <p>Thanks.</p>