webbrowser instabilities ? (firefox assertion)

[Sean McNeil]

gmake[4]: Leaving directory
`/big/usr/ports/www/mozilla-devel/work/mozilla/security/nss/cmd/shlibsign/mangle'
FreeBSD5.2_DBG.OBJ/shlibsign -v -i
/big/usr/ports/www/mozilla-devel/work/mozilla/dist/lib/libsoftokn3.so
Assertion failure: _PT_PTHREAD_MUTEX_IS_LOCKED(lock->mutex), at ptsynch.c:207
Abort trap (core dumped)

I have this exact same problem with -CURRENT.  I noticed I have
WITH_DEBUG in my make.conf and I'm trying to build with it out right
now.

Cheers,
Sean