[sork] pls help about Forwards H3 (3.0.1)...

[Winnie]

Hi,
When I "set/install vacation notice", then the warning is shown "failure in 
modifying vacation notice:"...

What's wrong about my configuration on vacation???
Here's the config as following:
vacation/conf.php

$conf['vacation']['path'] = '/usr/local/bin/vacation';
$conf['vacation']['default'] = 'Subject: ' . _("On vacation message") . "\n" 
. _("I'm on vacation and will not be reading my mail for a w
hile.") . "\n" . _("Your mail will be dealt with when I return.") . "\n";;
$conf['vacation']['subject'] = true;
$conf['vacation']['from'] = false;
$conf['server']['params']['default']['table'] = 'vacation';  ===> ??I add 
the table name "vacation" in the database "horde"...
$conf['server']['params']['default']['user_col'] = 'USERID';
$conf['server']['params']['default']['pass_col'] = 'password';
$conf['server']['params']['default']['message'] = 'vac_mess';
$conf['server']['params']['default']['subject'] = 'vac_sub';
$conf['server']['params']['default']['vacation'] = 'yes';
$conf['server']['params']['default']['driverconfig'] = 'horde';
$conf['server']['params']['default']['hordeauth'] = 'full';
$conf['server']['params']['encryption'] = 'crypt-md5';
$conf['server']['params']['show_encryption'] = false;
$conf['server']['driver'] = 'sql';
$conf['aliases']['show'] = false;
$conf['aliases']['driver'] = 'none';
$conf['user']['refused'] = array('root', 'bin', 'daemon', 'adm', 'lp', 
'shutdown', 'halt', 'uucp', 'ftp', 'anonymous', 'nobody', 'httpd', 
'operator', 'guest', 'diginext', 'bind', 'cyrus', 'courier', 'games', 
'kmem', 'mailnull', 'man', 'mysql', 'news', 'postfix', 'sshd', 'tty', 
'www');
$conf['menu']['apps'] = array();

Pls help me...

thx a lot...
regards,
winnie