[imp] IMP/Horde Authentication Problem

[FBN]

Hi,

I'm using OpenBSD 3.7, Horde 3.0.4 and Imp 4.0.3

I can login in horde using IMAP authentication, and my horde/test.php is OK
I can login in Imp using IMAP auth, and my imp/test.php is ok too ( login
working too )

But if this changes are made:

horde/config/conf.php  (imp authentication)
$conf['auth']['driver'] = 'application';
$conf['auth']['params']['app']  = 'imp';

imp/config/server
'hordeauth' => false

or

horde/config/conf.php (IMAP auth)
$conf['auth']['params']['hostspec'] = '127.0.0.1';
$conf['auth']['params']['port'] = 143;
$conf['auth']['params']['protocol'] = 'imap/notls';
$conf['auth']['params']['imapconfig'] = 'separate';
$conf['auth']['driver'] = 'imap';

imp/config/server (one time auth)
'hordeauth' => true  ( my usernames are without domain )

It doesn't work. the page result in: "The page cannot be displayed"

In horde.log: (using hordeauth as true)
"Login success for adm [X.X.X.X] to {127.0.0.1:143} [on line 93 of "/horde/imp/lib/Auth/imp.php"]

In logs/access_log: (apache)
- - [07/Jul/2005:15:41:40 -0300] "GET / HTTP/1.0" 302 0
- - [07/Jul/2005:15:41:40 -0300] "GET /horde/index.php HTTP/1.0" 302 0
- - [07/Jul/2005:15:41:41 -0300] "GET /horde/login.php?Horde=9n1ic4m8puc8i1c0l5mgrq76t3 HTTP/1.0" 200 7242
- - [07/Jul/2005:15:41:42 -0300] "GET /motd_logo.gif HTTP/1.0" 304 -
- - [07/Jul/2005:15:41:50 -0300] "POST /horde/login.php?nocache=1hivqf0tx8pw HTTP/1.0" 200 0
- - [07/Jul/2005:15:41:50 -0300] "GET /horde/index.php HTTP/1.0" 200 645

In logs/error_log: (apache)
[Thu Jul  7 15:41:53 2005] [notice] child pid 15366 exit signal Abort (6)
[Thu Jul  7 15:41:55 2005] [notice] child pid 4886 exit signal Abort (6)

How can i avoid to have to login twice ?? Thanks, and sorry for my english

Fabio