Adsense earnings went to almost zero!!!

My adsense earnings used to be around $9 a week not to long ago.
but recently earnings have been decreased dramaticly to around $1.20

now i follow this forum intense and noticed alot of other peoples adsense dropped alot. anyone changed to another ads manager? if so, wich one? and is it better?

 

I didnot make any changes in my site networks but same thing happen with me.

 

now the world under attack....
... you may looose ur money....
.... they will get you what/where ever you are....

nOTE: ... me hope the Recession thing will go away.... please someone kill the reCEssion