XWin.exe will not exit gracefully on Vista

[Mike Knope]

I finally have cygwin running nicely on Vista, however when I select 
exit then xwin.exe goes to almost 100% cpu and just stays there.  I have 
to use task manager to kill it.  I am using startxwin.bat to start up.  
The xwin line looks like this:
run XWin -multiwindow -clipboard -silent-dup-error

Everthing else seems to work just fine except for exiting.  Any clues?
Thanks,
Mike

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