[CentOS] Having trouble with FreeNX, Need help to make it work perfectly

Hi thanks for the reply i am really grateful if you can tell me how to
make FreeNX work like charm.

I am really stuck with it, and after reinstalling the server is
definitely pissing off my boss.

Please help me thanks.

===========================

Please let me review how my FreeNX was screwed up.

After i fresh install my CentOS 5, I 'yum install freenx' and so if i
am not wrong
I actually install freenx 0.5.0-12 or something.... but i think ya shd be -12.

Ok... so after i install freenx through yum. I follow what's on
http://wiki.centos.org/FreeNX

I --adduser and --passwd etc. Then copy the
/etc/nxserver/client_id*.key over to my NX Client on Windows.

Initially all works out. The NX session starts and i can do what i
want over this remote session, and i proceed with updating of the
critical updates for other apps from yum.

The problem comes after i do this, right after the yum update.

I choose to reboot my server. I reboot the server over the NX remote
session. By going System -> Log Off -> Reboot.
The NX Client's Window automatically closed (in quite a violent way
with error msg). Then the server reboot.
After the reboot, I try to reconnect to Server again using NX. But
this time it fails with the following message.

====================================================================================
NX> 203 NXSSH running with pid: 5940
NX> 285 Enabling check on switch command
NX> 285 Enabling skip of SSH config files
NX> 285 Setting the preferred NX options
NX> 200 Connected to address: 192.168.1.5 on port: 22
NX> 202 Authenticating user: nx
NX> 208 Using auth method: publickey
HELLO NXSERVER - Version 1.5.0-60-SVN OS (GPL)
NX> 105 hello NXCLIENT - Version 1.5.0
NX> 134 Accepted protocol: 1.5.0
NX> 105 SET SHELL_MODE SHELL
NX> 105 SET AUTH_MODE PASSWORD
NX> 105 login
NX> 101 User: root
NX> 102 Password:
NX> 103 Welcome to: XQSVR200611 user: root
NX> 105 listsession --user="root" --status="suspended,running"
--geometry="1280x1024x32+render+fullscreen" --type="unix-gnome"
NX> 127 Sessions list of user 'root' for reconnect:

Display Type Session ID Options Depth Screen Status Session Name
------- ---------------- -------------------------------- --------
----- -------------- ----------- ------------------------------


NX> 148 Server capacity: not reached for user: root
NX> 105 startsession --link="lan" --backingstore="1" --nodelay="1"
--encryption="1" --cache="32M" --images="64M" --media="0"
--session="XQSVR200611" --type="unix-gnome" --geometry="1280x994"
--fullscreen="1" --kbtype="pc102/en_US"
--screeninfo="1280x1024x32+render+fullscreen"

NX> 1000 NXNODE - Version 1.5.0-60-SVN OS (GPL)
NX> 700 Session id: XQSVR200611-1000-1279B1D659A32AEF7AA88D7C50CA5619
NX> 705 Session display: 1000
NX> 703 Session type: unix-gnome
NX> 701 Proxy cookie: 64b824b7aa9edb0a55c6e220710fba3c
NX> 702 Proxy IP: 127.0.0.1
NX> 706 Agent cookie: 64b824b7aa9edb0a55c6e220710fba3c
NX> 704 Session cache: unix-gnome
NX> 707 SSL tunneling: 1
NX> 1009 Session status: starting
NX> 710 Session status: running
NX> 1002 Commit
NX> 105 /usr/bin/nxserver: line 1190: 6719 Terminated sleep
$AGENT_STARTUP_TIMEOUT
NX> 1006 Session status: running
NX> 596 Session startup failed.
NX> 1004 Error: NX Agent exited with exit status 1.
Can't open /var/lib/nxserver/db/running/sessionId{1279B1D659A32AEF7AA88D7C50CA5619}:
No such file or directory.
mv: cannot stat
`/var/lib/nxserver/db/running/sessionId{1279B1D659A32AEF7AA88D7C50CA5619}':
No such file or directory
NX> 1006 Session status: closed
NX> 1001 Bye.
bye
Killed by signal 15.

I really do not know what's wrong. When i try to connect back locally
at my server. The GNOME UI is gone! I am now left with only the
console logon menu. This same problem happens everytime, even with
CentOS 4.4 recently.

(In the past, ard DEC 2006, I did the exact same thing on my CentOS
4.4 Server, it works without any problem EVEN with the same violent
exiting way, I have never have a problem connecting back to the
server. But recently after i failed my installation of CentOS 5 and go
back to CentOS 4.4, the problem starts to occur like what i have
mentioned. And I really did what was written on the wiki, nothing i
have done now is different from what i did in the past.)

Please, and sincerely please. Guys, if you all know what's wrong
please tell me, how should I solve it?
Did I miss out something? like installing of NX Node or NX Client on
the server etc?

Well explained or guide is really appreciated. Thanks, really Thank You.