Error when starting Cygwin on XP

[Ken Dibble]

Gert Kruger wrote:

>Welcome to the XWin X Server
>Vendor: The Cygwin/X Project
>Release: 6.8.2.0-2
>
>Contact: cygwin-xfree@cygwin.com 
>
>XWin was started with the following command line:
>
>X :0 -multiwindow -clipboard 
>
>ddxProcessArgument - Initializing default screens
>winInitializeDefaultScreens - w 800 h 600
>winInitializeDefaultScreens - Returning
>_XSERVTransmkdir: Owner of /tmp/.X11-unix should be set to root
>winCheckDisplayNumber - Cygwin/X is already running on display 0
>
>Fatal server error:
>InitOutput - Duplicate invocation on display number: 0.  Exiting.
>
>winDeinitMultiWindowWM - Noting shutdown in progress
>
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><<<<gwavasig>>>>
>
>  
>

http://x.cygwin.com/docs/faq/cygwin-x-faq.html#errors