[eluser]InsiteFX[/eluser]
Ok, well that tells us that you are not getting the post data from the form.
Try giving the input submit a name.
Code:
<input name="my_submit" type="submit" value="Log In"/>
Also try replace the $_POST with this
Code:
var_dump($this->input->post(NULL, TRUE)); // returns all POST items with XSS filter
exit;