Admob Test Ads Shows Only On English Devices

After I installed Google Play Services APIs 6.4.1 to insert banners in my app, i had hard times to make it work. On my test device (nexus-S mounting JB 4.1.2, language set to Itali

Solution 1:

I'm gonna answering myself, because it started working without any modification.

Ads have been displayed almost instantly for english devices, while, for some AdMob related reasons, to see ads in italian devices i had to wait for 4 (FOUR!!) days!

So, the answer is: just wait.

Hope this helps.