From owner-freebsd-fs  Thu May 22 17:29:21 1997
Return-Path: <owner-fs>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.5/8.8.5) id RAA19015
          for fs-outgoing; Thu, 22 May 1997 17:29:21 -0700 (PDT)
Received: from diablo.ppp.de (diablo.ppp.de [193.141.101.34])
          by hub.freebsd.org (8.8.5/8.8.5) with SMTP id RAA19009;
          Thu, 22 May 1997 17:29:17 -0700 (PDT)
Received: from papillon.lemis.com by diablo.ppp.de with smtp
	(Smail3.1.28.1 #1) id m0wUhko-000QcYC; Fri, 23 May 97 01:58 MET DST
Received: (grog@localhost) by papillon.lemis.com (8.8.4/8.6.12) 
       id LAA00630; Wed, 21 May 1997 11:48:52 +0800 (CST)
From: grog@FreeBSD.ORG
Message-Id: <199705210348.LAA00630@papillon.lemis.com>
Subject: Re: panic: blkfree: freeing free block
In-Reply-To: <199705202103.OAA00123@web1.calweb.com> from Cameron Slye at "May 20, 97 02:03:53 pm"
To: cslye@calweb.com (Cameron Slye)
Date: Wed, 21 May 1997 11:48:44 +0800 (CST)
Cc: jhs@FreeBSD.ORG, cslye@calweb.com, fs@FreeBSD.ORG
Organisation:   LEMIS, PO Box 460, Echunga SA 5153, Australia
Phone:          +61-8-8388-8250
Fax:            +61-8-8388-8250
Mobile:         +61-41-739-7062
Reply-to: grog@FreeBSD.ORG (Greg Lehey)
WWW-Home-Page:  http://www.FreeBSD.org/~grog
X-Mailer: ELM [version 2.4ME+ PL28 (25)]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-fs@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

Cameron Slye writes:
>> When all else fails: suspect hardware, including bad cache, ram, over clocking,
>> overloaded power, flaky discs, bad terminations, heat etc.
>
> I replaced the system with tested parts Friday night, last night it
> crashed..  Non-quatum drives and all..  Not a single chip or piece of
> hardware from the old system was used in the new box, I did a clean install
> of 2.2.2, and recompiled everything for inn...

There's something in the way you formulated this that makes me wonder.
You didn't say you took a completely new machine.  Is there *anything*
at all left of the old system (apart from the problem)?  Did you
change the power supply?  Did you change your mains supply?  No, of
course you didn't do that, but it's a possible culprit.

Greg