Hi,
The current gdm update https://rhn.redhat.com/errata/RHSA-2013-1213.html comes with an updated initscripts package.
Currently a CentOS 5 gets the gdm update but not the initscripts package.
Isn't it dangerous for those running with X because gdm doesn't create /tmp/.X11-unix anymore and the new initscripts, which creates it now, is not already available?
Regards, Simon