barry beat me to blogging this as I’m far to busy so credit to him for picking up on it.
You can see his post here:Â http://www.seroundtable.com/archives/022347.html
When he wrote about it the screen grab he had didn’t show this bug so I sent him one from a site of mine.
Here is the drop is click and impression according to google webmaster tools:
And here is a screen shot of traffic:
Bit of a google bug 🙂