[XFree 4.1]CPU usage/blank console

[Jan Tammen <luser@tammen.net>]

Hello all,
trying to set up X on my new box (AMD Thunderbird 1,4 GHz on a 
Elitegroup K7VZA-100 Rev. 3) for my no-name GeForce2 MX 200 
(64 MB RAM), I am confronted with those two problems:

1) I have installed xfree86-common 4.1.0-2, xserver-xfree8 4.1.0-2,
wmaker 0.65.1.-1 and set up my XF86Config-4 properly (at least I 
think so...). When I start X via 'startx', windowmaker starts normal
but after a short time, the Xfree86-process uses 99.9% CPU and
therefor windowmaker is not longer usable.

2) When I have to quit windowmaker (see above), and my box switches
back to console, I am presented a blank screen, and I have to reboot
the system.

Any hint appreciated!