HTTP authentication with lighttpd + fastcgi

Hi,

has anyone successfully set up a MoinMoin on lighttpd with
FastCGI and
HTTP authentication? My wikiconfig.py contains, as described
on [1], the
following two lines:

from MoinMoin.auth import http, moin_cookie

and

auth = [http, moin_cookie]

HTTP authentication works for the web server, but I am not
logged in with
MoinMoin afterwards (a MoinMoin account with the same name
does exist).
Instead, I have to login via the UserPreferences page.

Any suggestions what might be missing?

Regards,
Stefan

[1]: h
ttp://moinmoin.wikiwikiweb.de/HelpOnAuthentication