I don't know if you are feeling this? In the past couple of days, my Adsense stats have gone crazy. AT the past 2 days, at the morning it goes well, then at the afternoon, visits and clicks get lower and lower (when it is usually the best part of the day), then at the night, the stats start working again normally.
Today, I feel a different trend. Awful day. And just a couple of hours ago, the numbers begin raising.