iPhone iOS4.2 not allow MKMapView initialized in another thread!
<p>Because of the performance issue, i try to initialize my mapview in multithread. it works perfectly in iOS4.1 or below version.. however today some users send me emails that they got problem with the map. and i got this message: </p>

<p>Terminating app due to uncaught exception 'NSRangeException', reason: ' initWithFrame:: MKMapView must be initialized on the main thread.'</p>

<p>I have already changed my mapview initialization to the main thread.. however, do you guys know how to initialize the map in another thread with iOS 4.2?</p>

<p>regards
penny</p>
