X11 problems after Centos Update

[salimvkd]

Hi All
I just updated Centos to 6.7 version and startx is not working

It shows the following error... can anybody help me to fix this

The error message during the startx message is

xauth: creating new authority file /root/.serverauth.3916

_XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: server already running
(EE)
Fatal server error:
(EE) Cannot establish any listening sockets - Make sure an X server isn't already running(EE)
(EE)
Please consult the CentOS support
at http://wiki.centos.org/Documentation
for help.
(EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
(EE)
(EE) Server terminated with error (1). Closing log file.


Thanks in advance