They are latest ..
Perhaps, shouldl try another miner...
BTW I'm using latest Ubuntu.

I tried to decrease intensity to 5, but no change - still 50% load (

I used cgminer with one radeon 5850 and got 340MH/s (at 100% load)
But when I added second 5850 card  - I got only 250 MH/s on TWO cards. Cgminer shows, that both card are working at 44% (gpu activity)
Is there a way to make both cards work with cgminer at 100% load?
Anyone, help...

P.S. I run cgminer  on Ubuntu with these options:
"Cgminer -o POOL -u USER -p PASS -I10"