GLX problem with nvidia 304.88

[John Pilkington]

Hi:  I've been using 304.88 under 3.8.13-100.fc17.x86_64 without 
problems.  Today I installed 3.9.8-100 and its kmod, and the glx module 
from Xorg is being loaded.  Attempts to run Mythfrontend or Mythtvsetup 
go straight back to the login screen.

My xorg.conf has

Section "Files"
#	ModulePath   "/usr/lib64/xorg/modules/extensions/nvidia"
         ModulePath   "/usr/lib64/nvidia/xorg"
#	ModulePath   "/usr/lib64/xorg/modules/extensions"
	ModulePath   "/usr/lib64/xorg/modules"
	FontPath     "/usr/share/fonts/default/Type1"
EndSection

(where the lines commented out were originally installed by 304.64, 
which then had the same problem)

and  /etc/X11/xorg.conf.d/00-nvidia.conf has

Section "Files"
	ModulePath   "/usr/lib64/nvidia-304xx/xorg"
	ModulePath   "/usr/lib64/xorg/modules"
EndSection

Both of these look as if the nvidia modules should get preference.

Reverting to the earlier kernel doesn't revert to a good working system; 
  I have the same problem there now.

Suggestions?

Thanks,

John P