Lighttpd

Inside mod_fastcgi settings,
if a value already exists in enviroment, "bin-environment" will fail.
example setting is following.

fastcgi.server = ( "/dj.py" => (
                      "test1" => ("host" => "127.0.0.1",
                                "port" => 1026,
                                "bin-environment" => (
                                "DJANGO_SETTINGS_MODULE" => "dj.settings",
                                "PYTHONPATH" => "/var/www" ),
                                )
                           )
                   )

This setting will not properly insert correct PYTHONPATH into environment, because PYTHONPATH already exists.

unset PYTHONPATH
/etc/init.d/lighttpd start

This will have the problem fix.
If this behavior is desired, a proper warning also should be given.

-- yejun