From owner-freebsd-stable@FreeBSD.ORG  Fri Jun  2 12:04:09 2006
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From: Rutger Bevaart <rutger.bevaart@illian-networks.nl>
Date: Fri, 2 Jun 2006 14:04:04 +0200
To: freebsd-stable@freebsd.org
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Subject: RE: 6.1 Stable keeps hanging
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Try adding

debug.mpsafenet=0

to your /boot/loader.conf

and see if that resolves your problem. We experienced the same on a  
number of boxes which somehow seemes related to the locking mechanism  
used in the networking stack. The Dell's (1750, 1850/2850) don't like  
it.

Could be that you're experiencing the same.

Regards
Rutger Bevaart

> Message: 19
> Date: Fri, 2 Jun 2006 10:53:26 +0800
> From: Denny <denow@magix.com.sg>
> Subject: 6.1 Stable keeps hanging
> To: freebsd-stable@freebsd.org
> Message-ID: <20060602025326.GA30839@singtel.com>
> Content-Type: text/plain; charset=us-ascii
>
> Hi,
>
> I am running 6.1 stable, AMD64 on Dell 2850, Intel Xeon. It keeps  
> hanging for no reason, no panic message or core and I have to  
> reboot the system whenever it freezes.
>
> Any idea where to check?
>
> Denny