cant start X with today's kernel

I can't start X with a kernel made today. The server complains that the video card
is on ISA (it's really on AGP) and that it can't find any screens. Here the last
few lines from /var/log/Xorg.0.log:

(II) ATI: ATI driver wrapper (version 6.7.195) for chipsets: mach64, rage128, radeon
(II) Primary Device is: ISA
(EE) No devices detected.

I know there's an entry in /usr/src/UPDATING (20070930), and I did a fresh install
of xorg-7.3 today and X still won't start. Trying to force X to use PCI with BusID
in xorg.conf also doesn't help.

Has anyone else seen this? At the moment I'm using an old kernel from Sept 27.

-- 
Gary Jennejohn