I don’t really know who Johannes Specht is, neither do I know his emailaddress. But he and Luc Verhaegen are the heros of the day, because they found and fixed the Problem with the VIA KM400 Chipset. Now riccardo.arved.de finally has a running XFree86.
Grab the patch from here
Update 2003-02-20: David Dawes claimed that he committed the patch, but i can’t find it, neither in anoncvs nor in cvsweb. XFree86 is still a mystery to me..