Please Install the Updated Packages.

X.org was crashing and/or corrupting the screen when the screen is resized using the Resize and Rotate (randr) server extension. The problem identified was that the vesa driver was trying to use outdated values for its frame buffer, and so causing problem. The updated package has a patch fixing this issue.

x11-driver-video-vesa on Mandriva Linux 2007.0, Mandriva Linux 2007.0/X86_64