[Unison-hackers] windows 2003 crash .. unexplained

[beginthreadex]

Working in my lab with unison I have about 90GB of files creating a 
count of about 20,000 files. It takes a long time to do the initial sync 
but then seems to work. Our only test of this resulted in a complete 
shutdown of the Windows 2003 server with no explanations. No crash dump, 
no event log items, nothing. Has anyone else experienced something 
similar to this? I'm trying to be cautious about running the test again.