xfree fails to establish listening socket on Windows terminal server

[Kent Tong]

Hi,

I am using xorg-x11-base (6.8.99.901-1) on Cygwin (1.5.25-14). It
works fine on my computer but it fails on a Windows 2003 terminal
server. If I login as the Administrator, it works. If I login as a normal
user, it fails with the following error. So, this is definitely a permission
problem. Any idea? Thanks!

----- error message ------
$ startx

Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 6.8.99.901-4

Contact: [e-mail]

XWin was started with the following command line:

X :0 -multiwindow -clipboard

_XSERVTransmkdir: Owner of /tmp/.X11-unix should be set to root
_XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: server already running

Fatal server error:
Cannot establish any listening sockets - Make sure an X server isn't already running
winDeinitMultiWindowWM - Noting shutdown in progress

[Kent Tong]

It is the same error as (http://www.cygwin.com/ml/cygwin-xfree/2005-04/msg00076.html)