From owner-freebsd-ipfw@FreeBSD.ORG  Tue Jun 28 05:32:47 2011
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Date: Tue, 28 Jun 2011 05:32:47 GMT
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To: dima_bsd@inbox.lv, ae@FreeBSD.org, freebsd-ipfw@FreeBSD.org
From: ae@FreeBSD.org
Cc: 
Subject: Re: kern/144187: [ipfw] deadlock using multiple ipfw nat and
	multiple limit statements
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Synopsis: [ipfw] deadlock using multiple ipfw nat and multiple limit statements

State-Changed-From-To: open->feedback
State-Changed-By: ae
State-Changed-When: Tue Jun 28 05:29:45 UTC 2011
State-Changed-Why: 
Can you still reproduce this on a supported release? 

Or maybe you can test your rules on head/ branch?
There were some changes related to ipfw_nat.

http://www.freebsd.org/cgi/query-pr.cgi?pr=144187