From owner-freebsd-hackers@FreeBSD.ORG  Wed Aug  3 05:15:51 2005
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Date: Tue, 02 Aug 2005 22:19:40 -0700
From: Greg Albrecht <gba@undef.net>
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Subject: 5.3 scheduler problem reborn in 5.4-rel-p5?
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in searching for an answer to my problem, i came across this thread, to 
which there doesn't seem to have been a resolve:
http://www.monkey.org/freebsd/archive/freebsd-hackers/200504/msg00007.html

i must say that my problem is almost identical, per my dump:
http://undef.net/2005-08-02-dump.txt

'sio' is compiled into my kernel, although there was no serial in use at 
the time of my crash.

FreeBSD juanita.undef.net 5.4-RELEASE-p5 FreeBSD 5.4-RELEASE-p5 #1: Mon 
Jul 25 14:26:34 PDT 2005 
gba@juanita.undef.net:/usr/obj/usr/src/sys/JUANITA  i386

need more details?

thanks,
-g

-- 
Greg Albrecht (gba@undef.net) * -0700 GMT/UTC
http://undef.net * +1 213 447 3089