I have the same problems in more than one site. Nobody in the forum know the solution. The ads are showed but the validation doesn't work.
I am in the same boat. Stefanrest.com; my ads are showing up but it is not validating. If anyone figures this out...a little help would be greatly appreciated! update: I am stupid...sorry to bother anyone I did not look at the top of the screen where it told me the page it wasn't finding ads on. duh.....