VNC Configuration....

OS: Red Hat Enterprise Linux Server release 6.4 (Santiago)

I am getting following error. Can any one help to resolve this issue.

Mon Oct 28 16:38:46 2013
vncext: VNC extension running!
vncext: Listening for VNC connections on all interface(s), port 5902
vncext: created VNC server for screen 0
GNOME_KEYRING_SOCKET=/tmp/keyring-ueOw5U/socket
SSH_AUTH_SOCK=/tmp/keyring-ueOw5U/socket.ssh
GNOME_KEYRING_PID=58376
vmware-user: could not open /proc/fs/vmblock/dev
Failed to play sound: Not available
An instance of nm-applet is already running.

(polkit-gnome-authentication-agent-1:58444): GLib-GObject-WARNING **: cannot register existing type `_PolkitError'

(polkit-gnome-authentication-agent-1:58444): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
W: main.c: This program is not intended to be run as root (unless --system is specified).

** (gnome-user-share:58473): WARNING **: gnome-user-share cannot be started as root for security reasons.
Initializing nautilus-gdu extension
Initializing nautilus-open-terminal extension
Xlib: extension "VMWARE_CTRL" missing on display ":2".