302 moved temporarily

Hi.

I have developed a web application and in local server works perfectly, but when I upload the application to a server on the internet (godaddy) I get this errors...

When I enter the data to enter the system in fractions of a second I get these errors and the page is reloaded



and when I repeat the same operation then I get this



This is my jquery

Code:

$(document).ready(function (){
$("#frm_login").submit(function (e){
   e.preventDefault();
   var url = $(this).attr('action');
   var method = $(this).attr('method');
    var data = $(this).serialize();
   $.ajax({
       url:url,
        type:method,
       data:data
   }).done(function(data){
       if(data !==''){window.location.href='Welcome/index';}else{alert('EL usuario y la contrasenna no coinciden');}
   });
});
});

This is my controller code (Welcome.php)

PHP Code:

<?php

if (!defined('BASEPATH'))
    exit('No direct script access allowed');

class Welcome extends CI_Controller {

 public function new_user() {
        $username = $this->input->post('username');
        $password = sha1($this->input->post('password'));
        $check_user = $this->Usuarios->login($username, $password);
        if ($check_user == TRUE) {
            $data = array(
                'is_logued_in' => TRUE,
                'id_usuario' => $check_user->id,
                'perfil' => $check_user->perfil,
                'username' => $check_user->user,
                'password' => $check_user->pass,
                'nombre' => $check_user->name
            );
            $this->session->set_userdata($data);
            $this->index();
        } else {
            
        }
    }

    public function index() {

        echo $this->session->userdata('perfil');
        switch ($this->session->userdata('perfil')) {
            case '':
                $layout_data['footer'] = $this->load->view('Footer', NULL, TRUE);
                $layout_data['token'] = $this->token();
                $this->load->view('Welcome_message', $layout_data);
                break;
            case 'Administrator':
                redirect(base_url() . 'Admin');
                break;
            case 'Operator':
                redirect(base_url() . 'Suscriptor');
                break;
            default:
                $layout_data['footer'] = $this->load->view('Footer', NULL, TRUE);
                $this->load->view('Welcome_message', $layout_data);
                break;
        }
    }

} 


I hope somebody can help me.
THX!!!!