It normally goes into super horrible mode at 8 or 9PM not 12PM PST, did they decide they haven't smart priced enough? Who has tracked stats by the hour and are seeing horrible revenue as wel?
dzcap, you are a serious adsense user but I think you are becoming obsessed , is adsense a very important source of your income or an 'extra'? Try to relax a bit and focus on other things that can make you money. I've been there too, checking out my stats every hour or less, and then I though: I spend this many other watching a few bucks while I make lots doing other things? So I focussed on getting more other assignments and left the adsense for what it is . I focus on my site.