OGL Crashing X

[Steve Damm]

Hello,
    I've been running/programming OpenGL apps in Linux for awhile, 
particularly using Mandriva 2006 and KDE.  I recently installed that 
system on a laptop of mine and I am running into a huge problem in any 
Window Manager but failsafe mode.

    I'll use KDE as my example but the same errors also occured in 
IceWM.  If I open glxgears for example, it runs fine, 600+ fps, I can 
resize the window, maximize, minimize and it all works.  However if I 
try to MOVE the window (clicking on titlebar and moving it) as soon as I 
place the window in its new spot KDE shutsdowns and I'm back at the KDM 
login screen.  Other GL apps that I've programmed myself encounter the 
same problem, as well if I try to switch to fullscreen in any GL app the 
same crash occurs.

    Once this error has occured, if I do not restart the computer fully 
then the graphics remain screwed up behind the scene's.  After the 
crash, if I log back in and run glxgears again my FPS is about 3-5 
instead of 600+ before the crash.  I also cannot switch to any other 
terminals (Ctrl+Alt1-6), if I do I just see a screen full of colors.

    The oddest part is that if I run failsafe mode, EVERYTHING works 
100% fine.  I can run my homemade apps in fullscreen mode, switch 
between them, no crashing at all.  So since it is working fine in 
failsafe I dismissed KDE as the problem, dismissed GL as the problem, 
and was left with X being the issue.

My comp specs:
Acer Aspire 3000
1.8ghz
512 MB Ram
SiS M760GX 64MB (yes, sad, SiS drivers)


Any assistance?
Any way I can gather more info on the problem to report the bug? Where 
would I report the bug?

Thanks in advance,
Halsafar