[CentOS] vncserver doesn't start. Why?

Thu Mar 14 03:09:47 UTC 2013
nishi.plala <ilovefd at topaz.plala.or.jp>

I have been using tigervnc-server with CentOS6.2 since last summer.
I worked well.

Two days ago, I installed CentOS6.2 with Software development environment in
a new PC and  after "yum -y install update", tried to insall tigervnc-server
using "yum -y install tgervnc-server"

Installation itself has finished without any touble but vncserver didnot
start with the message like belows

[centos at matlablnx66 ~]$ vncserver -geometry 1600x956 :1
xauth: (stdin):1:  bad display name "matlablnx66:1" in "add" command

WARNING: The first attempt to start Xvnc failed, possibly because the font
catalog is not properly configured.  Attempting to determine an appropriate
font path for this system and restart Xvnc using that font path ...
Could not start Xvnc.

/usr/bin/Xvnc: symbol lookup error: /usr/bin/Xvnc: undefined symbol:
pixman_composite_trapezoids
/usr/bin/Xvnc: symbol lookup error: /usr/bin/Xvnc: undefined symbol:
pixman_composite_trapezoids

[centos at matlablnx66 ~]$