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From: Marc Santhoff <M.Santhoff@t-online.de>
To: Volker <volker@vwsoft.com>
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Date: Tue, 22 May 2007 18:14:18 +0200
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Cc: freebsd-stable@freebsd.org, Ivan Voras <ivoras@fer.hr>
Subject: Re: ghosthunting: machine freeze 6.2R
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Am Dienstag, den 22.05.2007, 17:53 +0200 schrieb Volker: 
> On 05/22/07 17:18, Ivan Voras wrote:
> > Volker wrote:
> > 
> >> My first thought is a hardware problem but why does it occur that less
> >> and only in the morning? My next thought is a DoS attack
> >> (CVE-2007-0244?) but can that lead into a machine freeze?
> > 
> > When in the morning? If it's around 3-4 am, that's when the (often
> > hardware intensive) default cron jobs kick in.
> 
> No, it's not cron (perdiodic daily/security) related. It appears 
> sometime between 7 and 11 am (CEST). That would be too easy. 
> Probably it's too early to see similarities as it's just on two days 
> in a row.

Check the power supply. If it is too small or does not filter transients
properly this can be the cause.

HTH,
Marc