I got a simillar set up Rig to yours and the first run I got the same.
That was with the 81. drivers .I then put the 77. drivers in and hit over 11,000.
Try using different drivers , man.Ignor my system , Im back to using my A8N SLi as nI couldnt get the 32 to run stable.
mind u I am useing 2 x 7800 GTx but I still hit over 10,000 wit 1 card.....(DRIVERS)
Check this out for 05 score..