spass-milter core dump

[James Lees Vodanovich]

I am running
Spamassasin 3.1.8
Spamass-milter 0.3.1
Sendmail 8.13.5
on NetBSD 3.1

The load is about 170 messages per hour

Spamass-milter crashes about intermittently
Command line
is -u nobody -p /var/run/spamass.sock -f
Nothing in spamassin's log or sendmail's log give any sense of what went 
wrong.

The relevant section from my mc config file is
#Spassassian Stuff
#Improve Milter performance
define(`confSEPARATE_PROC', `True')dnl
define(`confMAX_DAEMON_CHILDREN', `24')dnl
#The Milter
INPUT_MAIL_FILTER(`spamassassin', `S=local:/var/run/spamass.sock, F=T, 
T=C:20m;S:20m;R:20m;E:20m')
define(`confINPUT_MAIL_FILTERS', `spamassassin')dnl
define(`confMILTER_MACROS_ENVRCPT',`r, v, Z')dnl
define(`confMILTER_MACROS_CONNECT',`t, b, j, _, {daemon_name}, 
{if_name}, {if_addr}')dnl
define(`confMILTER_MACROS_HELO',`s, {tls_version}, {cipher}, 
{cipher_bits}, {cert_subject}, {cert_issuer}')dnl


Here is the backtrace from spamass-milter.core (28MB) it had been 
running only a few hours
Any idea's
(gdb) bt
#0  0xbda5e0fb in kill () from /usr/lib/libc.so.12
#1  0xbdb103b5 in pthread__errorfunc () from /usr/lib/libpthread.so.0
#2  0xbdb0d441 in pthread_mutex_unlock () from /usr/lib/libpthread.so.0
#3  0x0805336a in std::basic_string<char, std::char_traits<char>, 
std::allocator<char> > std::operator+<char, std::char_traits<char>, 
std::allocator<char> >(char const*, std::basic_string<char, 
std::char_traits<char>, std::allocator<char> > const&) ()
#4  0x0805291a in std::basic_string<char, std::char_traits<char>, 
std::allocator<char> > std::operator+<char, std::char_traits<char>, 
std::allocator<char> >(char const*, std::basic_string<char, 
std::char_traits<char>, std::allocator<char> > const&) ()
#5  0x080529bb in std::basic_string<char, std::char_traits<char>, 
std::allocator<char> > std::operator+<char, std::char_traits<char>, 
std::allocator<char> >(char const*, std::basic_string<char, 
std::char_traits<char>, std::allocator<char> > const&) ()
#6  0xbdb0f17d in pthread_create () from /usr/lib/libpthread.so.0