F9/KDE4: Can't access screen resolution changes after software install

[Don Levey]

Based upon a mention in Linux Journal, I installed the Penumbra: Black 
Plague demo yesterday on my laptop:

Acer TravelMate 4202WLMi
Inten Centrino Duo 1.66GHz
1 GB RAM
Intel GMA950, 1280x800
Fedora 9 x86
(hpl.log attached)
KDE4

At the end of the installation, there were no errors, though it seemed 
to restart X on my machine. After logging in again, I tried starting the 
demo just to see that it was working. When I exited it, I found that my 
desktop had been changed to 800x600. I had hoped that restarting X would 
reset my settings, but that didn't help.  Nor did changing the settings 
in the game itself.

I am unable to reconfigure my desktop at all. While the correct 
(1280x800) resolution is visible as a selection in System Settings, the 
Apply/Save button is not enabled. This appears to be a specific problem 
in KDE; I can restart X and use another environment (Gnome) at the 
correct resolution.  Likewise ICEwm; in ICEwm I can even start and run 
the game without issue and return to my proper desktop size.

What is particularly odd is that when logging in via KDE it *starts up* 
in the correct resolution, but eventually changes. What happened to my 
machine, and how do I get it back? It's probably just a configuration 
change in one file, but I don't know which one.

Thanks in advance,
  -Don