ERROR: RestrictionClauseSelectivity: bad value -1.998477

The above error lurks in my Apache logs. I'm totally puzzled about the
cause. I'm trying to use authentification from a Postgres database with:

- Apache 1.3.4/mod_ssl 2.1.7
- Postgres 6.4
- mod_auth_pgsql 0.1
- Linux 2.0.33/libc5

Apache configuration:

<Location /ecoservice/offer/>
AuthPGSQLDatabase cex
AuthPGSQLUserTable company
AuthPGSQLUserField login
AuthPGSQLPasswordField passwd
AuthName "Cex Inner Area"
AuthType basic

require valid-user
</Location>

The login and passwd fields are empty, but that should result in a
"Authentification failed" box.

This one works fine:

<LocationMatch /ecoservice/(admin|compedit)/>
AuthPGSQLDatabase cex
AuthPGSQLUserTable admin
AuthPGSQLUserField login
AuthPGSQLPasswordField passwd
AuthName "Cex Admin Area"
AuthType basic

require valid-user
</LocationMatch>

Ciao
        Racke

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