Thy Login code no work

Could someone explain to me why my login page is not working?
I created this account. You can try it at http://k.k8r.us/login.php
username: k
password: star

or you can create  your own here: http://k.k8r.us/signup.php

Here is my login page. It submits to itself, and if there is a successful login it 301 redirects to your "dashy dashboard"
[php]
<?php
require('inc/common.php');
require('inc/validationKit.php');
require('inc/dbConnect.php');
//require('inc/recaptchalib.php');

$username = $_GET['username'];

if ( isset($_POST['submitted']) ){
	$username = $_POST['username'];
	$password = $_POST['password'];

	$hashword = md5($password);

	//initialize error tracking
		$errors = 0;
		$errors_username = array();
		$errors_overall = array();

	//check username && combo
		if (strlen($username)>0){
			$result = mysql_query("SELECT * FROM users WHERE ( name='$username' && hashword='$hashword') LIMIT 1");
			$nameExist = mysql_num_rows($result);//die("$username ... $nameExist ... $password");
			if (!$nameExist){
				array_push($errors_overall,"Username or Password is incorrect.");
			}
		}
		else {
			array_push($errors_username,"you must insert a Username or Email to login");
		}
	//----- END check username && combo

	//collect all errors
		$errors = 0;
		$errors += count($errors_username);
		$errors += count($errors_overall);

	//create account
	if (0 == $errors){
		$data = mysql_fetch_row($result);
		$_SESSION['userID'] = $data['ID'];
		$_SESSION['username'] = $data['username'];
		//print_r($data);
		//die();
		//jump to dashboard
		header( 'Location: dashboard.php' );die();
	}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
	<head>
		<title>Login</title>
		<?php include("inc/meta.php");?>
	</head>
	<body>
		<?php include("inc/header.php");?>
		<?php $navLight="logging";include("inc/nav.php");?>

		<?php if (isset($errors) && $errors) echo $errors;?>
		<form action="" method="POST">
			<span class="errors">
				<?php
				if (isset($_GET['m']) && $_GET['m'] == '1') {
					echo "<span class=\"error\">You must be logged in to view that page. God you're stupid</span>";
				}
				?>
				<?= html_listArray($errors_overall) ?></span>
			<label>
				Username or Email: <input id="username" type="text" name="username" value="<?= $username ?>"/>
				<span class="errors"><?= html_listArray($errors_username) ?></span>
			</label>
			<label>
				Password: <input id="password" type="password" name="password"/>
			</label>
			<input name="submitted" type="hidden" value="1">
			<input type="submit" value="Submit"/>
		</form>
		<?php include("inc/footer.php");?>
	</body>
</html>
[/php]