TheCount - 12:38 am on Aug 28, 2012 (gmt 0)
FYI: I am having this same issue with adsense. I had an issue with Adwords a few weeks back. They sent me notice that my adwords could not be served in frames and they literally nixed my ads. I had no idea what they were talking about, I use WP and no frames at all.
I said "prove it" and they got back to me saying they had fixed the issue and I was at no fault, but now this adsense "glitch" and it seems like the same indications... Interesting.