Well, i have the same problem. And i can tell you that there isn't a problem with his laptop.
Because i have a desktop pc with a geforce ti 4200 (2.66 Ghz, 19",...).
With my previous rh 9 kernel i had no problems but with the new rh 9 kernel it'compiles a new kernel, but i can't get the resolution higher than 800*600.
Greetings Rip7 (steven.l)