Could it be your video cards settings? I was wondering if you guys with the
8800's who do not have this issue would post their settings to compare with
those who do. I just upgraded from a 7200 to a 8600 and WOW!

the deference
is miraculous. It went up in smoke three hours after I got it

(Thanks Tech
4 less

) the replacement is a MSI Twin Turbo 8600 GT from newegg.com. Took
two days to process the order and I am tracking it now, will be here Monday.
Meanwhile in the short time I had the 8600 from tech 4 less I noticed while
using nHancer the dramatic differences possible with the settings. Hence my
curiosity.
Anyway I just wanted to throw my two cents in.
ZeeWolf