rc5: initdb freeze with "selecting default max_connections ..."

System is Windows XP, the postgres-installer (postgresql-8.0.0-rc5.zip
resp. .msi) was used to install
envirement variable PGDATA is set to g:\pgsql

Never before (7.x versions, older version 8 beta/rc) I have got the
following response/problem with an initdb:

C:\Programme\PostgreSQL\8.0.0-rc5\bin>initdb
The files belonging to this database system will be owned by user
"postgres".
This user must also own the server process.

The database cluster will be initialized with locale German_Germany.1252.

creating directory G:/pgsql/data ... ok
creating directory G:/pgsql/data/global ... ok
creating directory G:/pgsql/data/pg_xlog ... ok
creating directory G:/pgsql/data/pg_xlog/archive_status ... ok
creating directory G:/pgsql/data/pg_clog ... ok
creating directory G:/pgsql/data/pg_subtrans ... ok
creating directory G:/pgsql/data/base ... ok
creating directory G:/pgsql/data/base/1 ... ok
creating directory G:/pgsql/data/pg_tblspc ... ok
selecting default max_connections ...

At this point initdb did freeze time and again.
However, before initdb seemed to have worked, when it was used by the
PostgreSQL-Windows-Installer.

Regards
Christoph Becker