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I don't want to lose confidence in big G tracking adsense revenues correctly, but:
we'have on highly trafficed page with three adunits each with it's own adsense channel to optimize layouts.
AdUnites Nr 1) and Nr 3) - regarding the postion in the html code - show basicly the same PageImpressions per Week. It's about the amount you would expect from the server logfile.
But Nr 2) shows EXACTLY double the amount of PIs (with a 50%lower CTR accordingly). That's aggregated data for all of november.
Anyone ever seen anything like this?
P.S We'have a related problem where a long running channel dropped by 90% within a day (during the Google Analytics hickup)and never regained.
If I view all channels everything's fine. If I look at aggregate my page impressions are doubled and CTR etc halved. This started around the 10th November for me.
A real pain - wasted a lot of time, and disappointed to find that my traffic hadn't doubled :(