[imp] IMP/Session Handler problem

[Martin Toth]

Hello Horde Masters,
I would like to ask if you can help me with my problem. All horde services running OK, i can login-in to webmail, send emails, receive emails, setup filters (ingo), all working.
But i can’t logout from webmail and also i can’t save changes in my settings when i am logged to webmail. There is no error log in DEBUG horde of IMP and all horde..

Horde AJAX will throw this every time I click logout or when i hit save in profile preferencies: 
We cannot verify that this request was really sent by you. It could be a malicious request. If you intended to perform this action, you can retry it now.
 

$conf['session']['name'] = 'Horde';
$conf['session']['use_only_cookies'] = true;
$conf['session']['cache_limiter'] = 'nocache';
$conf['session']['timeout'] = 0;
$conf['sql']['username'] = 'horde';
$conf['sql']['password'] = ‘password';
$conf['sql']['protocol'] = 'unix';
$conf['sql']['database'] = 'horde';
$conf['sql']['charset'] = 'utf-8';
$conf['sql']['ssl'] = false;
$conf['sql']['splitread'] = false;
$conf['sql']['phptype'] = 'mysqli';
$conf['datatree']['driver'] = 'sql';
$conf['share']['cache'] = false;
$conf['cache']['default_lifetime'] = 86400;
$conf['cache']['driver'] = 'Apc';
$conf['cache']['compress'] = true;
$conf['cache']['use_memorycache'] = '';
$conf['cachecssparams']['driver'] = 'filesystem';
$conf['cachecssparams']['lifetime'] = 86400;
$conf['cachecssparams']['compress'] = 'php';
$conf['cachecss'] = true;
$conf['cachejs'] = false;
$conf['cachethemes'] = false;
$conf['sessionhandler']['params']['driverconfig'] = 'horde';
$conf['sessionhandler']['type'] = 'Sql';
$conf['sessionhandler']['memcache'] = false;
$conf['memcache']['enabled'] = false;

This is config.

Any thoughts ?
Thanks for help.

Regards,
Martin