Hi Guys
It seems that the XOrg guys are systematically abandoning xorg.conf in favour of a HAL (Hardware Abstraction Layer) configured X-server. The classical model (xf86-driver-keyboard and xf86-driver-mouse) are being abandoned in favour of "xf86-driver-evdev". That's all very fine, but it has some often encountered quirks:
(1) Hybrid classical and evdev configurations are possible producing
strange results.
(2) Large sections of your /etc/X11/xorg.conf file, esp. those pertaining to input devices are being ignored and are superseded by config files in the directory /etc/hal/fdi/policy/, and what stumped me until this morning,
(3) you
have to set the KDE keyboard layout application to
"evdev managed keyboard".
These changes are
badly documented by the XOrg and HAL teams and I could only get this info by Googling the problem and spending much of the morning reading Gentoo, Debian and Ubuntu bug reports.
Hope you find this useful... or interesting.

Cheers
Riaan