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Forum Moderators: martinibuster
It could be a problem with your DNS server taking a long time to resolve the Adsense ad server. To see if this is the problem, you could put this line temporarily in your hosts file:
That forces the Adsense to resolve instantly to where it should go.
(This is only for testing, it's bad practice to do this permanently, as there's no guarantee that google will stay at that IP address.)