title: CLLocationManager didUpdateToLocation versus MKMapView's didUpdateUserLocation
body: <p>I get the user's location from both CLLocationManager and MKMapView.  Which one should I use to set the Map's center coordinate?</p>
  
  <p>Also, the two methods in the simulator differ in their answers.  The CLLocationManager returns the correct location whereas the MKMapview's didUpdateUserLocation returns the Apple office in cupertino.</p>