Code igniter shopping cart class working but not working

[eluser]canado[/eluser]
To make sure the error was not from my own data, I m doing this

Code:

[php]
$data = array(
    array(
          'id'      => rand(5, 2000),
          'qty'     => 1,
          'price'   => 1,
          'name'    => 'a'        
    )
         );

             $this->cart->insert($data);

[/php]

even with this, I m stuck at 11 items!!