Session and cookie problem

Hello,

Normally I use this config and it's work fine:
$conf = array(
'cache_inc' => './sites/all/modules/authcache/authcache.inc',
'memcache_servers' => array('127.0.0.1:11211' => 'default'),
'memcache_key_prefix' => 'madf_',
);

But when I add a session support: 'session_inc' => './sites/all/modules/memcache/memcache-session.inc',

The page doesn't loading at all in Firefox and Chrome:
This problem can sometimes be caused by disabling or refusing to accept cookies.

In IE it's loading, but users cannot login.
I added thos 2 lines to the config but without results:
'localhost:11211' => 'session',
'localhost:11211' => 'users',

$conf = array(
'cache_inc' => './sites/all/modules/authcache/authcache.inc',
'session_inc' => './sites/all/modules/memcache/memcache-session.inc',
'memcache_key_prefix' => 'madf_',
'memcache_servers' => array('127.0.0.1:11211' => 'default',
'localhost:11211' => 'session',
'localhost:11211' => 'users',
),
);

Any idea how I can fix this issue?

Thanks!