Upgraded mine from CentOS 5.2 to CentOS 5.3.. by performing..
yum update -y --exclude openoffice.*
and reboot..
boot menu having this splash image…
here is the login screen..
.
login screen can be captured by running another GDM and X using..
gdmflexiserver -n
p/s : nice artworks.. to view it.. have to login as new user as my old user already had customized all interface. 😎