Huge oblivion graphic problem

[Beast1970]

hi
I have amd 64 3200+ 1 gb ddr 500MHz Kingmax and Leadtek 6800 Ultra and I downloaded 84.25 drivers...

week ago oblivion was working perfectly and 2 day ago I got some graphic problem...evrything is beautiful but when I come in BRUMA here what's happend(picture)..and the rest of game works fine..

I said week ago evrthing was perfect..

I reinstalled game 2x

And also my save game sometimes freeze when I try to load it..but if I starts the "ffdshow" that will not happend..

http://img480.imageshack.us/img480/2157/screenshot28ot.jpg

[Joe Forster/STA]

Read the FAQ, contact the publisher. (Also, wrong forum. Moved.)

[Beast1970]

ok but please help me!
I have figured out that this only happens in snow area...