Sudden drop in Adsense earning after maintainence

[foxfox]

at least 30-40%

my daily earning is fairly stable for a few months, but after their maintainence, the earning drop about 30-40%, since two days before....

[barns101]

Things are looking good as far as I am concerned. See this related thread [webmasterworld.com] for other opinions.

[Pengi]

My recent performance trends seem to be continuing withaout any positive or negative changes from the maintenance.