From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.1)
Gecko/20031114

Description of problem:
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.


Version-Release number of selected component (if applicable):
xorg-x11-xdm-6.7.0-5

How reproducible:
Always

Steps to Reproduce:
1.login as user1
2.hit <ctl>-<alt>-<bkspave>
3.login as user 2
4, If you run the commands w, who or users they report user1 is still
logged on.
5, What does not happen every time is a process ran by user1 sometines
appears in the ps list.

Actual Results:  The results are that w, who and users report that
users who had logged on previously are still logged in. Further the
last command contains two lines related to user1, One says he had
logged off and the other says he is gone - no logout

Expected Results:  What should have happened si when user1 typed
<ctl>-<alt>-<backspace> thre would be logged off and the X-server
would be rewstarted. No record of the login would remain in th output
of the w, who or users command.
And the last command's output would show he had logged off.

Additional info: