3DMARK06 BLACK FLICKER IN CANYON FLIGHT

Hi people here are my specs

9800 GX2
ABIT IX38 QUAD GT
CORSAIR 750W PSU
CORSAIR XMS2 4GB DDR 2 (2X2GB) DUAL CHANNEL
Q6600 ARTIC FREEZER 7
VISTA 64 BIT

Right, Since i have built this machine, I get a strange black flicker that only happens in one part of canyon flight ( WHEN DRAGON JUMPS OVER SHIP).

It flickers then returns to normal, it doesnt happen all the time but most of the time. It seems I am not alone, I have read some articles which says other users are having the exact same problem.

I have tried latest, old, and beta drivers all the same. All temps are fine.

Cannot get rid of the problem, doesnt seem to affect any games.

I would like the problem to go away, any ideas?