realmaverick - 3:38 pm on Oct 11, 2012 (gmt 0)
Personally, I would see 4 adverts as too many and evidently Google do too, in your case at least.
It's more than possible to earn equal and even more, with less ads. I'd definitely think about redesigning your page and having a max of 2 ads.
Now that I know I was hit by the ATF update, which actually appears to be more of a page layout, I need to figure out EXACTLY what Google wants.