nvidia 177.80 on F9

I grabbed srpms for F10 and built on F9. Good news is, seems to work. Bad news: 177.80 gives rediculously high CPU usage on my system. Doing nothing at all, xorg is using 17%. Scroll a simple web page, usage is 33%. (--) PCI:*(0@1:0:0) nVidia Corporation GeForce 8600M GS rev 161, Mem @ 0xc6000000/16777216, 0xd0000000/268435456, 0xc4000000/33554432, I/O @ 0x00002000/128 xorg.conf is essentially just defaults.