Problem - any password accepted

While experimenting just now, I seem to have found a weird problem with
passwords, in that _anything_ I type in is accepted as a valid password.


Here are the relevant bits of pg_hba.conf
# Database administrative login by UNIX sockets
local   all         postgres                          ident sameuser

# TYPE  DATABASE    USER        CIDR-ADDRESS          METHOD

# "local" is for Unix domain socket connections only
local   all         all                               ident sameuser
# IPv4 local connections:
hostnossl    junk        olly        127.0.0.1/32               trust
host    all         all         127.0.0.1/32          md5
# IPv6 local connections:
host    all         all         ::1/128               md5

1.  Unix socket access is fine - no password requested.
olly@linda:~$ psql junk
Welcome to psql 8.2.4, the PostgreSQL interactive terminal.

2.  TCP/IP access: this uses SSL so it skips the hostnossl line and hits
the next host line, which specifies an md5 password.  Whatever I type is
accepted.

junk=# \q
olly@linda:~$ psql -h localhost junk
Password:
Welcome to psql 8.2.4, the PostgreSQL interactive terminal.
junk=# select * from pg_shadow;
 usename  | usesysid | usecreatedb | usesuper | usecatupd |               passwd                | valuntil | useconfig
----------+----------+-------------+----------+-----------+-------------------------------------+----------+-----------
 postgres |       10 | t           | t        | t         |                                     |          |
 olly     |    16384 | t           | t        | t         | md5739e5b0ea17d0a2b9b58df4fad055a09 |          |
(2 rows)

In the log I have:
2007-05-30 17:54:59 BST LOG:  could not receive data from client: Connection res
et by peer
2007-05-30 17:55:02 BST FATAL:  password authentication failed for user "olly"

but it has still let me in.

--
Oliver Elphick                                          olly@lfix.co.uk
Isle of Wight                              http://www.lfix.co.uk/oliver
GPG: 1024D/A54310EA  92C8 39E7 280E 3631 3F0E  1EC0 5664 7A2F A543 10EA
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