CentOS 5, yum update, X11 problems

[scott-DPNOqEs/LNQ at public.gmane.org (Scott Ehrlich)]

I installed CentOS 5 on a laptop, performed a yum update, then, after 
everything was patched, instead of bringing me to the X tty window (tty7) 
it left me with a text-only tty window.  I chance CNTL-ALT-7 brought me to 
the waiting window manager login screen.

Has anyone else experienced this?   Please remind me what file I need to 
change to have the system present the window manager at first boot again.

Thanks.

Scott

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