I have 4 ads (link units and regular) that all appear on the same pages, so in theory, they all should have around the same impessions (though it is never equal, I know that, but they are usually close).

I had added a new link unit on Monday. Everything got did great on Tues. Weds, ads stats got stuck in the AM. After the ads were unstuck, the 3 ads that have been there for months performed as usual. The new one went haywire. Impressions out the wazzu. Lke 3X the impressions of the other ads. In fact, it is showing more impressions than I had pageviews on the site. And considering that I don't have these ads on every page of the site, that means this ad unit got significantly more reported impressions than what the site got. And, just for the record, the site sees 10K+ visitors a day, so this is no small difference.

Today is lining up to be the same. I replaced the ad unit, just in case it was someone who lifted my content (though I could not fnd anything like that), but I was wondering if anyone else was seeing this?