ken_b - 11:39 pm on Sep 13, 2012 (gmt 0)
I had about the same experience with a message about moving a 728x90 adblock. RPM crashed the day I got the message, and crashed more the next day.
Anyway as the rpm steadily declined I spent 2 days modifying my theme only to find that 16x600 made absolutely no difference. Anyone else see messages like these in there adsense account?
After that I just removed the adblock completely.