I can confirm that behavior on my thinkpad R61 running f9.
from lscpi:
Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev
0c)
kernel: kernel-2.6.26.6-79.fc9.i686
xorg-x11-server-Xorg-1.5.0-2.fc9.i386
please Note that this happens randomly.
regards
Christoph