Description of problem:
I'm currently accessing a FC5 box remotely via cygwin/X
I use xdmcp and gdm as the greeter.
when you select logout from the menu in KDE
a window pops up giving you an option of what you can do, in the case of a
remote connection you only get the option to logout.
When this window pops up the gdm-binary on the server segfaults and respawns
displaying a blue screen (eek) with grey message box on a new vt number..
You do not actually have to finalize the logout on the remote client.
The message in the respawned vt is "There already appears to be an X Server
running on display :0" etc.... everytime you select logout from the menu this
repeats and grabs another incremental vt, hence before long you have quite a few
gdm-binary's running on numerous vt's.

I believe something is happening in gdm-binary when the kde logout window pops
up, perhaps with regard to getting what options are allowed to be displayed on
the logout options list??

The only crash info I can get is the following from dmesg:
gdm-binary[4410]: segfault at 0000000000000078 rip 000000000040bd07 rsp
00007fffb31db310 error 4

Also the final message from gdm in /var/messages before respawn is:
Apr 28 23:17:14 bilbo gdm[6319]: gdm_socket_handler: Accepting new connection fd 9
Apr 28 23:17:14 bilbo gdm[6319]: Handling user message: 'QUERY_LOGOUT_ACTION'

I have attached the additional messages of gdm restarting from /var/messages



Version-Release number of selected component (if applicable):
GDM 2.14.11
X Window System Version 7.0.0
Release Date: 21 December 2005
X Protocol Version 11, Revision 0, Release 7.0
Build Operating System:Linux 2.6.9-42.0.8.ELsmp x86_64Red Hat, Inc.
Current Operating System: Linux bilbo.tresar-electronics.com.au
2.6.20-1.2312.fc5 #1 SMP Tue Apr 10 15:14:58 EDT 2007 x86_64
Build Date: 08 April 2007

Not sure about the version / date on X... rpm shows latest Xorg from rpm version 
xorg-x11-server-Xorg-1.0.1-9.fc5.7


How reproducible:
Always