multiseat -- still trying...

[dave madden]

In the continuing saga of me trying to get multiseat running so two
people can use my stupid-fast machine instead of buying & running a
second box...

I couldn't get multiseat with two video outputs on a Radeon card, with
either the proprietary or X.Org driver.  I found an old Voodoo3 card
and got xorg.conf set up so starting "-layout Seat0" and "-layout
Seat1" work properly (one at a time!) but if I start one while the
other is already going, the new server causes the old server to blank
(but not die).  If I terminate the new server, the old one comes back
to life.  It doesn't seem to matter whether I start the Radeon server
or the Voodoo3 server first.

Anybody have any ideas where to look, or would be willing to check
configs / log files / whatever information I can collect?  I'm using
6.8.2 on linux-2.6.9 (there's something wrong with my 6.9.0 that
breaks Japanese text input, but I have a 6.9.0 build to test with if
that will help...)

Thanks!