title: AdMob test ads not working - iOS
body: <p>I am using AdMob through AdWhirl and last week running in the simulator showed test ads from both AdMob and iAd.
  Nothing has changed in my AdWhirl code, and test mode is still on, yet I no longer get test ads from AdMob. Every now and then I get a proper ad. Test ads from iAd are fine.</p>
  
  <p>I have tried the AdWhirl and AdMob forums but my posts never get posted!</p>
  
  <p>Anyone know what the problem could be?</p>
  
  <p>Thanks</p>