6800 OC on the way! I usually consider myself old & jaded about this stuff but the anticipation is gettin' good.
You're right, something's wrong if you aren't doing better than a 440.
I can't imagine the WHQL driver would be that slow but which Forceware version are you using? From Leadtek, Nvidia, or other? Give one of the beta's a try to compare performance. I'm using 71.24 with good results.
I keep an eye on places like guru3d:
http://downloads.guru3d.com/download.php?id=10