Screen savers crashing???

[pcbroch]

Hi all:

 

I am having a little problem with all the screen savers except the "Computer Name" screen savers.

 

They basically crash the System Preferences app when I select them.

 

I used to be able to select and view any screen saver when pressing the "Test" button, although they never kicked in when supposed to.

 

Now, they simply crash the Sys Prefs app when I try to select them. Anything I'm missing?

 

Latitude C640, P4 1.7GHz, 512M DDR Ram, SSE2, 10.4.3, 1111b.

 

Thanks!

 

EDIT:

 

Ok, I guess it's "fixed". My video card is not supported AFAIK (Radeon Mobility 7500). I deleted all the ATI related .kexts except ATIRadeon.kext, ATIRadeonDVDDriver.bundle and ATIRadeonGA.plugin and it's not crashing (although OpenGL is a dog now). I guess the problem was using a driver linked to unexisting (or unsupported) functions calls for my card.