[XFree86] ThinkPad T21/FreeBSD: X wont terminate cleanly

I run FreeBSD 4.8-STABLE on my 256M ThinkPad T21, and have installed XFree86-4.3.0,1 from packages, along with the Gnome desktop, package gnome2-2.2.0. I have also compiled the KDE desktop from port kde-3.1 and it also exhibits this problem. My laptop locks up upon termination of the X session.

[XFree86] ThinkPad T21 locks up on exit from X session

I run FreeBSD 4.8-STABLE on my 256M ThinkPad T21, and have installed XFree86-4.3.0,1 from packages, along with the Gnome desktop, package gnome2-2.2.0. My laptop locks up upon termination of the X session. When I select Log Out from the Actions menu, the screen goes to what appears to be a comp