Description of problem:

I have upgraded my workstation from RH8 to RH9. When I try to start gnome 
session, it restarts X.I have found followin error logs in .xsession-errors:
SESSION_MANAGER=local/anpa003.net.autocom.pl:/tmp/.ICE-unix/1186
Gnome-Message: gnome_execute_async_with_env_fds: returning -1
Gnome-Message: gnome_execute_async_with_env_fds: returning -1
Gnome-Message: gnome_execute_async_with_env_fds: returning -1
The program 'gnome-session' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadLength (poly request too large or internal Xlib length erro'.
  (Details: serial 3937 error_code 16 request_code 155 minor_code 20)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
The application 'magicdev' lost its connection to the display :20.0;
most likely the X server was shut down or you killed/destroyed
the application.

When I try failsafe session and run gnome-panel, metacity and nautilius manualy 
everything works fine.


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


How reproducible:
Everytime

Steps to Reproduce:
1. Upgrade form rh8 to rh9
2. Start gnome session
3.
    
Actual results:


Expected results:


Additional info:
my workstation is:
AMD K6 350MhZ
168 MB RAM
ATI Rage 128 16 MB