Not much to add, but I've tried it today with xorg-server 1.8.2 and it seems to crash more than with 1.7.7. Unless I add the "RenderAccel" "off" option I can't even get X to start up with either KDE or E.

Once in, doing anything 3D at all (glxgears or turning on compositing) results in an immediate hang of X every time. Cursor still moves, but can't light the capslock or do anything.