Win32 ODBC 'Unexpected protocol character during authentication'

Hi,
I have a problem with the following:

PostgreSQL 7.4beta2 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.2.3
(actually CVS from yesterday)

psqlODBC Version='07.03.0100' Win32

The error (last 2 lines) when conneting via Access 97 is:

conn=45547640, PGAPI_DriverConnect( in)='DSN=ah;', fDriverCompletion=1
DSN info:
DSN='ah',server='ahb',port='5432',dbase='ah',user='ah',passwd='xxxxx'

onlyread='0',protocol='6.4',showoid='0',fakeoidindex='0',showsystable='0'
conn_settings='',conn_encoding='OTHER'
translation_dll='',translation_option='' Global Options:
Version='07.03.0100', fetch=100, socket=4096, unknown_sizes=0,
max_varchar_size=254, max_longvarchar_size=8190
disable_optimizer=1, ksqo=1, unique_index=1, use_declarefetch=0
text_as_longvarchar=1, unknowns_as_longvarchar=0, bools_as_char=1
NAMEDATALEN=64 extra_systable_prefixes='dd_;',
conn_settings='' conn_encoding='OTHER' CONN ERROR:
func=PGAPI_DriverConnect, desc='Error from CC_Connect', errnum=210,
errmsg='Unexpected protocol character during authentication'

It is working with:

PostgreSQL 7.4devel

I guess something has changed in PostgreSQL 7.4 "pre-beta3".

--
Med venlig hilsen / Best regards / Mit freundlichen Grüssen

Andreas Hinz