AdMob 4.3.1 adds not showing up (No AdMob ID yet (just for test), can't get ViewWidth)

Question

First of all, I know there are a lot of questions about this topic. I searched all over the internet, but most of the tutorials are about older versions of AdMob. Also, all

Answer 1

Referring to the following errors:

07-26 15:51:24.046: W/webcore(842): Can't get the viewWidth after the first layout  
07-26 15:51:24.871: W/Ads(842): Invalid unknown request error: Cannot determine request type. 

Is your ad unit id correct?