X Unable to launch

I was trying to launch X Windows after yum install  yum groupinstall "Desktop" "Desktop Platform" "General Purpose Desktop"

 But I was not able to launch X. Instead I got

Fatal server error:
[ 9491.484] could not open default font 'fixed'
[ 9491.484] (EE)
Please consult the CentOS support
at http://wiki.centos.org/Documentation
for help. (done)
[ 9491.484] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.

To solve this,

# yum -y install libXfont