Running the display at an unsupported refresh rate can, indeed, cause strange image artifacts, including your "ghosting" problem.  It can also blow out your monitor if you're using a CRT.  Make sure that all of the lines in xorg.conf have refresh rates set within the specs for your monitor (break out the manual if you have to).
Suse has a tendency to do this, I've found that the settings in the xorg.conf they setup by default have a distressing tendency to match European standards, which makes it really mess up US monitors.  While you're in there it might be a good idea to remove any resolutions your monitor/card don't support, since those can screw things up too, and X.org has, occasionally, been known to reset into a semi-random selection within the list of available modes if something causes the X server to crash.

Fritz wrote:
> It's still ugly.  I can't tell any difference.
> 
> I performed the YOU (YaST Online Update) procedure, per the instructions at the nVidia web site.  I believe the new driver is running because:
> 
> 1.)  I see the new nVidia driver's "splash screen" momentarily (which I haven't seen before).
> 
> 2.)  The new version of xorg.conf has driver set to "nvidia"
> 
> However, I did notice the monitor's on-screen setup reveals that it is being driven at rather oddball refresh rates.  Could this make a difference?
> 
> Is there any way to directly control the refresh rate using YaST? Do I have to manually recompute new "Modelines" in xorg.conf?
> 
> Fritz
> 
> 
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