KDM crashes on startup

[Patrick O'Callaghan]

F13 fully updated.

kdm-4.4.3-1.fc13.1.x86_64
xorg-x11-server-Xorg-1.8.0-12.fc13.x86_64
xorg-x11-drivers-7.3-14.fc13.x86_64

On rebooting after the last update, I get a console instead of the KDM
login screen. This is what I see in /var/log/messages:

Jun  3 00:35:09 bree kdm: :0[27754]: Fatal X server IO error: Interrupted system call

I can run KDE via xstart so it's not the end of the world, but obviously
I'd like to fix this. My video is Intel an 82Q963/Q965 on the mobo.
Remember, in F13 Intel video only works with KMS.

I don't see any KDM-related bugs in Fedora BZ, so I'll file it if
necessary.

poc