pgpool-II 3.0 + postgres 9rc1 + md5 authentication not working

I can't get md5 authentication working with postgres 9rc1 and pgpool-II 3.0.
I see references to "pool_passwd" in the pgpool documentation, but I see
nothing indicating *where* this file should exist and how pgpool finds it.
I've set my accounts up in pcp.conf, however, I do not believe this is what
is expected.

When I try to access the database with md5 turned on, I see the following
error in my pgpool debug log: read_password_packet_password: failed to read
password packet "p"

I can get everything working with trust.

postgres log:
*LOG: unexpected EOF on client connection*
LOG: disconnection: session time: 0:00:00.007 user=test database=test
host=10.201.121.204 port=42812

psql output:
psql -h 127.0.0.1 -p 9999 test test
Password for user test:
*psql: server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
*
pgpool debug log:
2010-09-14 21:38:51 DEBUG: pid 6633: I am 6633 accept fd 6
2010-09-14 21:38:51 LOG: pid 6633: connection received: host=127.0.0.1
port=48336
2010-09-14 21:38:51 DEBUG: pid 6633: Protocol Major: 3 Minor: 0 database:
test user: test
2010-09-14 21:38:51 DEBUG: pid 6633: new_connection: connecting 0 backend
2010-09-14 21:38:51 DEBUG: pid 6633: pool_ssl: SSL requested but SSL support
is not available
2010-09-14 21:38:51 DEBUG: pid 6633: pool_read_message_length: slot: 0
length: 12
2010-09-14 21:38:51 DEBUG: pid 6633: trying md5 authentication
2010-09-14 21:38:51 DEBUG: pid 6633: DB node id: 0 salt: d3da5234
*2010-09-14 21:38:51 DEBUG: pid 6633: read_password_packet_password: failed
to read password packet "p"
2010-09-14 21:38:51 ERROR: pid 6633: do_md5: read_password_packet failed
*2010-09-14 21:38:51 DEBUG: pid 6633: do_md5failed in slot 0
2010-09-14 21:38:53 DEBUG: pid 6633: I am 6633 accept fd 6
2010-09-14 21:38:53 LOG: pid 6633: connection received: host=127.0.0.1
port=48338
2010-09-14 21:38:53 DEBUG: pid 6633: Protocol Major: 3 Minor: 0 database:
test user: test
2010-09-14 21:38:53 DEBUG: pid 6633: new_connection: connecting 0 backend
2010-09-14 21:38:53 DEBUG: pid 6633: pool_ssl: SSL requested but SSL support
is not available
2010-09-14 21:38:53 DEBUG: pid 6633: pool_read_message_length: slot: 0
length: 12
2010-09-14 21:38:53 DEBUG: pid 6633: trying md5 authentication
2010-09-14 21:38:53 DEBUG: pid 6633: DB node id: 0 salt: 855592aa
2010-09-14 21:38:53 DEBUG: pid 6603: reap_handler called
2010-09-14 21:38:53 DEBUG: pid 6603: reap_handler: call wait3
*2010-09-14 21:38:53 ERROR: pid 6603: Child process 6633 was terminated by
segmentation fault
2010-09-14 21:38:53 DEBUG: pid 6603: child 6633 exits with status 11 by
signal 11
*2010-09-14 21:38:53 DEBUG: pid 6603: fork a new child pid 6671
2010-09-14 21:38:53 DEBUG: pid 6603: reap_handler: normally exited

pg_hba.conf:
local all all trust
host all all 127.0.0.1/32 trust
host all all ::1/128 trust
host all all 0.0.0.0/0 md5

pool_hba.conf:
local all all trust
host all all 0.0.0.0/0
md5

pgpool.conf:
listen_addresses = '*'
port = 9999
pcp_port = 9898
socket_dir = '/srv/pgpool/run'
pcp_socket_dir = '/srv/pgpool/run'
backend_socket_dir = '/srv/pgpool/run'
pcp_timeout = 10
num_init_children = 64
max_pool = 4
child_life_time = 300
connection_life_time = 0
child_max_connections = 0
client_idle_limit = 0
authentication_timeout = 60
logdir = '/srv/pgpool/log'
pid_file_name = '/srv/pgpool/run/pgpool.pid'
replication_mode = false
load_balance_mode = false
replication_stop_on_mismatch = false
failover_if_affected_tuples_mismatch = false
replicate_select = false
reset_query_list = 'ABORT; DISCARD ALL'
white_function_list = ''
black_function_list = 'nextval,setval'
print_timestamp = true
master_slave_mode = false
master_slave_sub_mode = 'slony'
delay_threshold = 0
log_standby_delay = 'none'
connection_cache = true
health_check_timeout = 20
health_check_period = 0
health_check_user = 'nobody'
failover_command = ''
failback_command = ''
fail_over_on_backend_error = true
insert_lock = true
ignore_leading_white_space = true
log_statement = false
log_per_node_statement = false
log_connections = true
log_hostname = false
parallel_mode = false
enable_query_cache = false
pgpool2_hostname = ''
system_db_hostname = 'localhost'
system_db_port = 5432
system_db_dbname = 'pgpool'
system_db_schema = 'pgpool_catalog'
system_db_user = 'pgpool'
system_db_password = ''
backend_hostname0 = '10.215.74.98'
backend_port0 = 5432
backend_weight0 = 1
*enable_pool_hba = true
*recovery_user = 'nobody'
recovery_password = ''
recovery_1st_stage_command = ''
recovery_2nd_stage_command = ''
recovery_timeout = 90
client_idle_limit_in_recovery = 0
lobj_lock_table = ''
ssl = false
debug_level = 100