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Date: Tue, 20 Feb 2007 08:47:47 +0300
From: "Andrey V. Elsukov" <bu7cher@yandex.ru>
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To: Alex Povolotsky <tarkhil@webmail.sub.ru>
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Cc: freebsd-net@freebsd.org, FreeBSD Stable <freebsd-stable@freebsd.org>
Subject: Re: mpd sometimes hangs the whole system?
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Alex Povolotsky пишет:
> mpd (fresh) on FreeBSD 6.1p12 sometimes hangs system, totally, to reset. 
> Tried two completely different boxes, so it cannot be a hardware problem.

It's easy to reproduce? Can you try make debug-friendly kernel?

http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug-deadlocks.html
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/serialconsole-setup.html
http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug-online-ddb.html

> I'm updating to 6.2 now, but have little hope. What can I turn on in 
> kernel to fix it or at least to make computer reboot?

See the above links.
-- 
WBR, Andrey V. Elsukov