kernel-2.6.20-1.2962.fc6 problem

[Mike C]

I have just yum updated a machine which included updating the kernel
from kernel-2.6.20-1.2952.fc6 to kernel-2.6.20-1.2962.fc6

When I booted to the new kernel I was unable to get any better screen resolution
that 800x600 !!

Yet re-booting to the previous kernel returned my display to the correct
resolution! I am running KDE but this should not affect the display - 
Has anyone else had this?  I guess there is some bad interaction between the
xorg and kernel updates?

The hardware profile is 

http://smolt.fedoraproject.org/show?UUID=bd6fa448-485f-4640-b89b-b83c8d8111d3

Mike