Repeateble panic in g_journal_optimize on 8.0-BETA2

Hi!
I have 2 gjournal nodes configured on my system:

$ mount
/dev/ad0s4a on / (ufs, local, read-only)
devfs on /dev (devfs, local)
/dev/ad0s4e.journal on /usr/local (ufs, asynchronous, local, gjournal)
/dev/ad0s4d on /var (ufs, local, soft-updates)
/dev/ad0s3.eli.journal on /usr/home (ufs, asynchronous, local, gjournal)
/usr/local/arch/ports on /usr/ports (nullfs, local)
/dev/md0 on /tmp (ufs, local)
devfs on /var/named/dev (devfs, local)
$ uname -a
FreeBSD laptop.levsha.org.ua 8.0-BETA2 FreeBSD 8.0-BETA2 #25 r195969: Thu Jul 30 15:07:37 EEST 2009     root_at_laptop.levsha.org.ua:/usr/local/arch/obj/usr/local/arch/src/sys/LEVSHA  i386

I recieve panic when have long hi load on journal (when start tindrebox
to rebuild a lot of ports, tinderbox is on /usr/local ) in
g_journal_optimize

All kernel dump files, kernel configuration file, loader.conf , debug
kernel is found on http://jabber.net.ua/tmp/dload/crash/3/

Is it known problem?

-- 
Mykola Dzham, LEFT-(UANIC|RIPE)
JID: levsha_at_jabber.net.ua