Description of problem:
I upgraded a local development box from FC4's glib2 2.6.4 to 2.7.3 (rawhide) a
few days ago.  Today, I noticed when I logged out of the machine - I was unable
to log back in remotely via the gdm graphical greeter.  I would enter my user
name and password - it would immediately exit.  I enabled debug on gdm - but no
useful descriptions were made other than it informed that it was going to
terminate.  gdm would not exit if you specified an invalid user or password.

I began reverting packages one by one to FC4's release.  When re-installing
2.6.4, logins worked normally.  Something in glib2-2.7.3-1 breaks the graphical
greeter after a successful password entry.

Version-Release number of selected component (if applicable):
glib2-2.7.3-1

How reproducible:
Everytime

Steps to Reproduce:
1. Enable "graphical greeter" in gdmsetup.
2. Update to rawhide glib2 2.7.3-1.
2. Restart gdm (init 3 then init 5)
3. Attempt to login remotely (X -query localhost :1 if on the same machine).
4. Enter user name properly.
5. Enter password properly.
  
Actual results:
Your session is terminated prematurely.

Expected results:
Normal login should occur.

Additional info:
Pulled from debug gdm messages from /var/log/messages.

Jul 21 14:59:30 localhost gdm[2689]: XDMCP: Start up on host bigputer, port 177
Jul 21 14:59:30 localhost gdm[2689]: gdm_start_first_unborn_local: Starting :0
Jul 21 14:59:30 localhost gdm[2689]: gdm_display_manage: Managing :0
Jul 21 14:59:30 localhost gdm[2689]: loop check: last_start 0, last_loop 0, now:
1121975970, retry_count: 0
Jul 21 14:59:30 localhost gdm[2689]: Resetting counts for loop of death detection
Jul 21 14:59:30 localhost gdm[5784]: gdm_slave_start: Starting slave process for :0
Jul 21 14:59:30 localhost gdm[5784]: gdm_slave_start: Loop Thingie
Jul 21 14:59:30 localhost gdm[5784]: Sending VT_NUM == -1 for slave 5784
Jul 21 14:59:30 localhost gdm[5784]: Sending VT_NUM 5784 -1
Jul 21 14:59:30 localhost gdm[2689]: gdm_display_manage: Forked slave: 5784
Jul 21 14:59:30 localhost gdm[2689]: Accepting XDMCP connections...
Jul 21 14:59:30 localhost gdm[2689]: Handling message: 'VT_NUM 5784 -1'
Jul 21 14:59:30 localhost gdm[2689]: Got VT_NUM == -1
Jul 21 14:59:30 localhost gdm[5784]: gdm_server_start: :0
Jul 21 14:59:30 localhost gdm[5784]: gdm_auth_secure_display: Setting up access
for :0
Jul 21 14:59:30 localhost gdm[5784]: gdm_auth_secure_display: Setting up access
Jul 21 14:59:30 localhost gdm[5784]: gdm_auth_secure_display: Setting up access
for :0 - 1 entries
Jul 21 14:59:30 localhost gdm[5784]: Sending COOKIE == <secret> for slave 5784
Jul 21 14:59:30 localhost gdm[5784]: Sending COOKIE 5784 d2...
Jul 21 14:59:30 localhost gdm[2689]: Handling message: 'COOKIE 5784 d2...'
Jul 21 14:59:30 localhost gdm[2689]: Got COOKIE == <secret>
Jul 21 14:59:30 localhost gdm[5784]: gdm_server_spawn: Forked server on pid 5789
Jul 21 14:59:30 localhost gdm[5784]: do_server_wait: Before mainloop waiting for
server
Jul 21 14:59:31 localhost gdm[5789]: gdm_server_spawn: '/usr/X11R6/bin/X :0
-audit 0 -auth /var/gdm/:0.Xauth vt7'
Jul 21 14:59:31 localhost gdm[5784]: gdm_server_start: After mainloop waiting
for server
Jul 21 14:59:31 localhost gdm[2689]: (child 5784) gdm_server_usr1_handler: Got
SIGUSR1, server running
Jul 21 14:59:31 localhost gdm[5784]: gdm_server_start: Completed :0!
Jul 21 14:59:31 localhost gdm[5784]: Sending VT_NUM == 7 for slave 5784
Jul 21 14:59:31 localhost gdm[5784]: Sending VT_NUM 5784 7
Jul 21 14:59:31 localhost gdm[2689]: Handling message: 'VT_NUM 5784 7'
Jul 21 14:59:31 localhost gdm[2689]: Got VT_NUM == 7
Jul 21 14:59:31 localhost gdm[5784]: Sending XPID == 5789 for slave 5784
Jul 21 14:59:31 localhost gdm[5784]: Sending XPID 5784 5789
Jul 21 14:59:31 localhost gdm[2689]: Handling message: 'XPID 5784 5789'
Jul 21 14:59:31 localhost gdm[2689]: Got XPID == 5789
Jul 21 14:59:31 localhost gdm[5784]: gdm_slave_run: Opening display :0
Jul 21 14:59:31 localhost gpm[2367]: *** info [mice.c(1766)]:
Jul 21 14:59:31 localhost gpm[2367]: imps2: Auto-detected intellimouse PS/2
Jul 21 14:59:33 localhost kernel: agpgart: Found an AGP 2.0 compliant device at
0000:00:00.0.
Jul 21 14:59:33 localhost kernel: agpgart: Putting AGP V2 device at 0000:00:00.0
into 1x mode
Jul 21 14:59:33 localhost kernel: agpgart: Putting AGP V2 device at 0000:01:00.0
into 1x mode
Jul 21 14:59:35 localhost gdm[5784]: Sending START_NEXT_LOCAL
Jul 21 14:59:35 localhost gdm[2689]: Handling message: 'START_NEXT_LOCAL'
Jul 21 14:59:35 localhost gdm[5784]: gdm_slave_greeter: Running greeter on :0
Jul 21 14:59:35 localhost gdm[5784]: gdm_slave_greeter: Greeter on pid 5839
Jul 21 14:59:35 localhost gdm[5784]: Sending GREETPID == 5839 for slave 5784
Jul 21 14:59:35 localhost gdm[5784]: Sending GREETPID 5784 5839
Jul 21 14:59:35 localhost gdm[2689]: Handling message: 'GREETPID 5784 5839'
Jul 21 14:59:35 localhost gdm[2689]: Got GREETPID == 5839
Jul 21 14:59:37 localhost gdm[5784]: gdm_slave_wait_for_login: In loop
Jul 21 14:59:37 localhost crond(pam_unix)[5743]: session closed for user myohe
Jul 21 14:59:37 localhost gdmgreeter[5839]: Unexpected greeter command received:
'  '
Jul 21 14:59:37 localhost gdm[5784]: term_quit: Final cleanup
Jul 21 14:59:37 localhost gdm[5784]: gdm_slave_quick_exit: Will kill everything
from the display
Jul 21 14:59:37 localhost gdm[5784]: Running gdm_verify_cleanup and pamh != NULL
Jul 21 14:59:37 localhost gdm[5784]: gdm_server_stop: Server for :0 going down!
Jul 21 14:59:37 localhost gdm[5784]: gdm_server_stop: Killing server pid 5789
Jul 21 14:59:38 localhost gdm[5784]: gdm_server_stop: Server pid 5789 dead
Jul 21 14:59:38 localhost gdm[5784]: gdm_slave_quick_exit: Killed everything
from the display
Jul 21 14:59:38 localhost gdm[2689]: mainloop_sig_callback: Got signal 17
Jul 21 14:59:38 localhost gdm[2689]: gdm_cleanup_children: child 5784 returned 65
Jul 21 14:59:38 localhost gdm[2689]: gdm_child_action: In remanage
Jul 21 14:59:38 localhost gdm[2689]: gdm_display_manage: Managing :0
Jul 21 14:59:38 localhost gdm[2689]: loop check: last_start 1121975970,
last_loop 1121975970, now: 1121975978, retry_count: 1
Jul 21 14:59:38 localhost gdm[5852]: gdm_slave_start: Starting slave process for :0
Jul 21 14:59:38 localhost gdm[5852]: gdm_slave_start: Loop Thingie
Jul 21 14:59:38 localhost gdm[5852]: gdm_slave_run: Sleeping 1 seconds before
server start

(rinse/repeat)