BUG #4406: silent install error

The following bug has been logged online:

Bug reference: 4406
Logged by: Mike Gagnon
Email address: mike(dot)gagnon(at)bellnet(dot)ca
PostgreSQL version: 8.3.1
Operating system: Windows XP
Description: silent install error
Details:

Hi,

When I try to do a silent install, I have created the user and password in
windows before trying this:

MSIEXEC /i "postgresql-8.3-int.msi" /qb /log "c:\logfile.txt"
ADDLOCAL="server,nls,psql,pgadmin,includefiles,libfiles,binfiles"
INTERNALLAUNCH=1 DOSERVICE=1 CREATESERVICEUSER=0 DOINITDB=1
SERVICEDOMAIN="<ComputerName>" SERVICEACCOUNT="postgres"
SERVICEPASSWORD="randompass1" SERVICENAME="PostgreSQL Database Server 8.3"
SUPERUSER="postgres" SUPERPASSWORD="postgrespw" LOCALE=C ENCODING=SQL_ASCII
LISTENPORT=5432 PERMITREMOTE=1 PL_PGSQL=1 PL_PERL=1 PL_PERLU=1 PL_TCL=0
PL_TCLU=0 PL_PYTHONU=0 BASEDIR="c:\mydir\PostgreSQL\8.3"

I then get the following error:
"User account ¡¡¡¡¡¡¡s¡¡¡¡\¡¡¡¡¡W does not exist"

It's as if the installer doesn't pick up the correct username I'm giving
it...

Is there any way around this?

Many thanks,
Mike