Nvidia - Problems with 3D acceleration

[Melanie]

Hi all!

I have some troubles with my 3D acceleration of my Nvidia Card GeForce
GTS 250.

My system is fedora 12 x86_64 (Kernel 2.6.32.11-99.fc12.x86_64) and I
installed the Nvidia driver (driver version 195.36.15) like described in
the fedoraforum.org via rpmfusion.

Then I installed wine and started WoW. The game starts but I have
massive graphical corruptions (so I cant see a thing on the display) and
my screen flickers every few seconds. I tried to activate Compiz, but I
have nearly the same problems like with WoW: My screen is flickering, my
mouse is very slow and also if I try to move the terminal window, it is
nearly impossible.

So I started to search for the reason.

I installed these nvidia packages:
nvidia-settings-1.0-3.4.fc12.x86_64
akmod-nvidia-195.36.15-1.fc12.x86_64
nvidia-xconfig-1.0-2.fc12.x86_64
xorg-x11-drv-nvidia-libs-195.36.15-1.fc12.i686
kmod-nvidia-2.6.32.11-99.fc12.x86_64-195.36.15-1.fc12.2.x86_64
xorg-x11-drv-nvidia-libs-195.36.15-1.fc12.x86_64

glxinfo | grep rendering says "direct rendering: yes"

glxinfo
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce GTS 250/PCI/SSE2
OpenGL version string: 3.2.0 NVIDIA 195.36.15
OpenGL shading language version string: 1.50 NVIDIA via Cg compiler

For me everything looks fine here.

I know glxgears is not a benchmark, but I think I have really very low
frames:
27 frames in 5.8 seconds = 22.000 FPS
132 frames in 5.0 seconds = 26.174 FPS
59 frames in 6.3 seconds =  9.335 FPS
106 frames in 6.2 seconds = 16.969 FPS
45 frames in 5.9 seconds =  7.665 FPS
45 frames in 5.4 seconds =  8.371 FPS
41 frames in 5.0 seconds =  8.120 FPS

My xorg.conf is short:
[root at Melanie X11]# cat xorg.conf
# Xorg configuration created by livna-config-display

Section "Files"
	ModulePath   "/usr/lib64/xorg/modules/extensions/nvidia"
	ModulePath   "/usr/lib64/xorg/modules"
EndSection

Section "ServerFlags"
	Option	    "AIGLX" "on"
EndSection

Section "Device"
	Identifier  "Videocard0"
	Driver      "nvidia"
	Option	    "AddARGBGLXVisuals" "True"
EndSection

Section "Extensions"
	Option	    "Composite" "Enable"
EndSection



I have no idea what the reason is for the bad 3D acceleration. Do you
have any suggestions for me?

Thank you in advance.
Best regards,
Melanie