problem with ctrl-alt-bkspace in FC2

[akonstam trinity edu]

In all versions of RedHat products up though FC1 typing 
ctl-alt-bkspace logs the user off and restarts the X server.

In the FC2 the following results:
a. 2 lines in the last command output, one indicating the user logged off
and the other saying user is gone - no logout

b. restarts the X server.

c. when a user logs into the machine it is found that the w, who and
users command indicate the original user is still logged on.

d. at times there remain zombie processes owned by the original user.

Now it seems clear that all this comes from switching from XFree86 to
xorg but it annoying especially in a lab of student users.

Does anyone know how to stop this behavior?
-- 
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Aaron Konstam
Computer Science
Trinity University
One Trinity Place.
San Antonio, TX 78212-7200

telephone: (210)-999-7484
email:akonstam trinity edu