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If I include the impressions which were me checking a few pages to check some new stuff was working properly, then I don't see any way that this can be genuine.
I'm not sure what to do about this...
Do I ignore it and hope it's just a blip?
Or do I Email Adsense (quoting my ip addys) and say I've noticed this and it's not me, etc.
I've also had a couple of spammy link requests for one of the sites running Adsense this morning, sent to the Whois email for the domain and not the address related to the website, so this is making me a bit suspicious.
my Adsense report is showing a ridiculous CTR
It does that all the time for me. The CTR that Adsense gives you is hardly ever correct. They carry forward some clicks so for several days your stats could be showing a lower CTR and then suddenly they'll dump those old clicks on your account one day causing your stats to show a sharp increase in CTR.
Par for the course.
They emailed me back and said no, we watch over everything very carefully and we don't see a problem.
So nothing changed, and they thanked me for bringing it to their attention. But if one person clicks on multiple links it looks real high. 1 person/1 click is equal to 100% but 1 person/3 clicks would be 300% and the truth is that someone may find ads that are on target appealing and click on more than one.
Some webmasters are too paranoid about Adsense :)
I usually have a fairly high CTR - I think that's mainly due to usually getting very well targetted ads on the specific subject. There are often drastic ups and downs depending on how good the ads are on a particular day.
This was totally wild though. From a quick look at the logs just now I've found that one page was repeatedly requested from one of my sites running adsense early this morning. So many times that the rest of the days normal traffic isn't balancing the CTR out to anything like normal levels even now. Grrr...