ati driver 10.6 and 10.7 crap drop fps wtf ?

hi, i have xfx 5770 xxx in crossfire, 10.4 driver

anybody have same experience with new 10.6 and 10.7 drivers ?
i try this too drivers and fps in BC2 drop from 80 to 30, 40 fps
is totaly crap drivers from ati
v 10.4 fan

using 1 5770 and 10.6 i gained some performance in general, but i dont have BC2, been playing borderlands, dirt 2 and gta 4

BC2 has had problems from the get go with the drivers so i wonder if when they fix one thing it went back to being crap for BC2