session variable
$this->session->userdata('email') =>
$this->session->userdata('group') =>
$this->session->userdata('id') =>
$this->session->userdata('user_id') =>

Array
(
    [66.249.69.219] => Array
        (
            [time] => 1337250226
            [uri] => /portal/index.php/galeri_foto/detail/728/BNN-turut-berpartisipasi-dalam-kegiatan-pameran-pembangunan-di-lapangan-sepak-bola-Kertawinangun-Kab.-Kuningan-yang-dilaksanakan-pada-tanggal-18-25
            [bot] => 
        )

    [66.249.69.133] => Array
        (
            [time] => 1337250141
            [uri] => /portal/index.php/konten/detail/deputi-hukum-dan-kerjasama/kegiatan/9712/rapat-penyusunan-kerangka-kerja-program-unodc-indonesia-tahun-2011-2014
            [bot] => 
        )

    [125.162.203.207] => Array
        (
            [time] => 1337250151
            [uri] => /portal/index.php/backsite/post/load_script/1/bgiframe-superfish-supersubs
            [bot] => 
        )

    [38.107.179.208] => Array
        (
            [time] => 1337250237
            [uri] => /portal/
            [bot] => 
        )

)