when csrf is true only works in firefox and not in other browser

Code:

&lt;?php 



class Inicio extends CI_Controller {



    public function __construct()

       {

            parent::__construct();

            session_start();

            $this->load->model('feed_model');

            $this->load->model('membresia');

            $this->load->library('form_validation');

            

            

       }

    function index()

    {

        

        $data['query'] = $this->feed_model->getAllRows();

        $this->load->view('inicio_view', $data);

    }

    

    function inicio_usuario()

    {

        $data['query'] = $this->feed_model->getAllRows();

        $this->load->view('inicio/inicioUsuarios', $data);

        

    }

    

    function evento()

    {

        $data['query'] = $this->feed_model->geteventos();

        $this->load->view('inicio/eventos', $data);

    }

    

    function post() //not tested yet

    {

        $id = $this->uri->segment(3);

        $data['verificar'] = $this->feed_model->vcom($id);

        $data['post'] = $this->feed_model->getpost($id);

        $data['comentario'] = $this->feed_model->getcomentarios($id);

        

        $this->load->view('inicio/post',$data);

        

        $this->form_validation->set_rules('comentario', 'Coemntario', 'trim|required');

        

        

        

    if($this->form_validation->run() !== FALSE)

        

        {            

            $this->load->helper('date');

            

            $now = time();

            

            $this->feed_model->comentar(

                                $this->input->post('idpost'),

                                $this->session->userdata('username'),

                                $this->input->post('comentario'),

                                unix_to_human($now));

            redirect('inicio/post/'.$id);

            

        }

    

    }

    function nuevoUsuario()

    {





        

        // field name, error message, validation rules

        $this->form_validation->set_rules('nombre', 'Nombre', 'trim|required');

        $this->form_validation->set_rules('apellido', 'Apellido', 'trim|required');

        $this->form_validation->set_rules('correo', 'Correo', 'trim|required|valid_email');

        $this->form_validation->set_rules('usuario', 'Usuario', 'trim|required|min_length[6]');

        $this->form_validation->set_rules('password', 'Contraseña', 'trim|required|min_length[6]|max_length[32]');

        $this->form_validation->set_rules('password2', 'Confirmar Contraseña', 'trim|required|matches[password]');

        

        

    if($this->form_validation->run() == FALSE)

        {

            redirect('inicio/signup');

        }

        

        else

        {            

            $data = array(

                'Nombre' => $this->input->post('nombre'),

                'Apellido' => $this->input->post('apellido'),

                'Correo' => $this->input->post('correo'),            

                'Usuario' => $this->input->post('usuario'),

                'Contraseña' => md5($this->input->post('password')),

                'tipo' => 2                        

            );

                

            $q = $this->membresia->registrarse($data);

                    

            if($q == true)

            {

                redirect('inicio/bienvenida');

            }

            

            

        }

            

    }            

    

    function login()

    {

        $this->load->view('inicio/login_form');

        

    }

    

    function loginin()

    {

        

        $this->form_validation->set_rules('username','','required');

        $this->form_validation->set_rules('password','','required|min_length[6]');

        

        

        if($this->form_validation->run() !== false)

        {

            

            $res = $this

                ->membresia

                ->verificarUsuario(

                $this->input->post('username'), 

                $this->input->post('password')

                );

                

            if( $res !== false)

            {

                $_SESSION['usuario'] = $this->input->post('username');

                

                $data = array(

                'username' => $this->input->post('username'),

                'is_logged_in' => true

                );

                $this->session->set_userdata($data);

                if($res->tipo == 1)

                {

                    

                    redirect('cms');

                }

                else

                {

                    redirect('inicio/inicio_usuario');

                }

                

            }

        

        }

        else

            {

                redirect('inicio/login_form');

            }

    }

    

    function olvido()

    {

        $this->form_validation->set_rules('correo', 'Correo', 'trim|required|valid_email');

        

        

        if($this->form_validation->run() !== false)

        {

            redirect('inicio');

        }

        else

        {

            $this->load->view('inicio/olvido');

        }

    }

    

    function logout()

    {

        session_destroy();

        redirect('inicio');

    }

    

    

    

}

Code:

$config['sess_cookie_name']        = 'cisession';

$config['sess_expiration']        = 7200;

$config['sess_expire_on_close']    = FALSE;

$config['sess_encrypt_cookie']    = TRUE;

$config['sess_use_database']    = TRUE;

$config['sess_table_name']        = 'ci_sessions';

$config['sess_match_ip']        = FALSE;

$config['sess_match_useragent']    = TRUE;

$config['sess_time_to_update']    = 300;



/*

|--------------------------------------------------------------------------

| Cookie Related Variables

|--------------------------------------------------------------------------

|

| 'cookie_prefix' = Set a prefix if you need to avoid collisions

| 'cookie_domain' = Set to .your-domain.com for site-wide cookies

| 'cookie_path'   =  Typically will be a forward slash

| 'cookie_secure' =  Cookies will only be set if a secure HTTPS connection exists.

|

*/

$config['cookie_prefix']    = "";

$config['cookie_domain']    = ($_SERVER['SERVER_NAME'] == 'localhost' ? '' : preg_replace('/^www\./', '', 

$_SERVER['SERVER_NAME'])); 

$config['cookie_path']        = "/";

$config['cookie_secure']    = FALSE;