YES, I have RH 6.2 on a DELL CPiA Latitude with exactly the same
problem. Just confirming your problem -- no solution.
> Help! If I move certain items across the screen the image is
> mangled. The best example is KDE's kpanel. If I press the hide
> button on the left side it hides and unhides fine. If I press the
> hide button on the right side it hides, but after unhiding images on
> the panel are distorted. I've had this happen while moving
> applications on the desktop as well. Several different versions of
> XF86Config have been tried without any luck.
> System is running RedHat 6.2 the display is the internal 13" TFT
> Has anyone else ever seen this before??