Tried franceloc's modifiv=cation to the kdmrc, then switched login managers to kdm.
Still got lockups, regardless if using KDE or Gnome.
Tried no display manager. Machine booted, got to a tty login prompt, logged in and did a "startx &". Had no "default" desktop set so XFCE booted. Tried to logout, ie, go back to the tty and got the lockup.
Using GDM here, too.
Tried franceloc's modifiv=cation to the kdmrc, then switched login managers to kdm.
Still got lockups, regardless if using KDE or Gnome.
Tried no display manager. Machine booted, got to a tty login prompt, logged in and did a "startx &". Had no "default" desktop set so XFCE booted. Tried to logout, ie, go back to the tty and got the lockup.
David