Problemas sistema de usuarios.

Buenas tardes, tengo un sistema de usuarios en una pagina web PHP, bueno, les comento, todo va bien con el usuario y contraseña, se registra sin problemas etc. Todos mis "problemas" empezaron al tratar de agregar un nuevo campo al registro, el de nombre, bueno, el register lo agrega a la base de datos a la perfeccion pero a la hora de mostrarlo en la parte de el perfil, no lo hace, sin embargo, el usuario y la password en md5 si que la muestra :S. Aqui les dejo todos los codigos de mis archivos php por si alguien es tan hamable y tiene unos minutillos para ayudarme. Muchisimas gracias de antemano.

database.php
<?

/**
* Connect to the mysql database.
*/
$conn = mysql_connect("localhost", "root", "mipw") or die(mysql_error());
mysql_select_db('niki', $conn) or die(mysql_error());

?>
register.php
<?
session_start();
include("database.php");

/**
* Returns true if the username has been taken
* by another user, false otherwise.
*/
function usernameTaken($username){
global $conn;
if(!get_magic_quotes_gpc()){
$username = addslashes($username);
}
$q = "select username from users where username = '$username'";
$result = mysql_query($q,$conn);
return (mysql_numrows($result) > 0);
}

/**
* Inserts the given (username, password) pair
* into the database. Returns true on success,
* false otherwise.
*/
function addNewUser($username, $longname, $password){
global $conn;
$q = "INSERT INTO users VALUES ('$username', '$longname', '$password')";
return mysql_query($q,$conn);
}

/**
* Displays the appropriate message to the user
* after the registration attempt. It displays a
* success or failure status depending on a
* session variable set during registration.
*/
function displayStatus(){
$uname = $_SESSION['reguname'];
$lname = $_SESSION['reglname'];
if($_SESSION['regresult']){
?>

<h1>Registered!</h1>
<p>Thank you <b><? echo $uname; ?></b>, your information has been added to the database, you may now <a href="main.php" title="Login">log in</a>.</p>

<?
}
else{
?>

<h1>Registration Failed</h1>
<p>We're sorry, but an error has occurred and your registration for the username <b><? echo $uname; ?></b>, could not be completed.<br>
Please try again at a later time.</p>

<?
}
unset($_SESSION['reguname']);
unset($_SESSION['reglname']);
unset($_SESSION['registered']);
unset($_SESSION['regresult']);
}

if(isset($_SESSION['registered'])){
/**
* This is the page that will be displayed after the
* registration has been attempted.
*/
?>

<html>
<title>Registration Page</title>
<body>

<? displayStatus(); ?>

</body>
</html>

<?
return;
}

/**
* Determines whether or not to show to sign-up form
* based on whether the form has been submitted, if it
* has, check the database for consistency and create
* the new account.
*/
if(isset($_POST['subjoin'])){
/* Make sure all fields were entered */
if(!$_POST['user'] || !$_POST['name'] || !$_POST['pass']){
die('You didn\'t fill in a required field.');
}

/* Spruce up username, check length */
$_POST['user'] = trim($_POST['user']);
if(strlen($_POST['user']) > 30){
die("Sorry, the username is longer than 30 characters, please shorten it.");
}

/* Spruce up name, check length */
$_POST['name'] = trim($_POST['name']);
if(strlen($_POST['name']) > 32){
die("Sorry, the username is longer than 32 characters, please shorten it.");
}

/* Check if username is already in use */
if(usernameTaken($_POST['user'])){
$use = $_POST['user'];
die("Sorry, the username: <strong>$use</strong> is already taken, please pick another one.");
}

/* Add the new account to the database */
$md5pass = md5($_POST['pass']);
$_SESSION['reguname'] = $_POST['user'];
$_SESSION['regresult'] = addNewUser($_POST['user'], $_POST['name'], $md5pass);
$_SESSION['registered'] = true;
echo "<meta http-equiv=\"Refresh\" content=\"0;url=$HTTP_SERVER_VARS[PHP_SELF]\">";
return;
}
else{
/**
* This is the page with the sign-up form, the names
* of the input fields are important and should not
* be changed.
*/
?>

<html>
<title>Registration Page</title>
<body>
<h1>Register</h1>
<form action="<? echo $HTTP_SERVER_VARS['PHP_SELF']; ?>" method="post">
<table align="left" border="0" cellspacing="0" cellpadding="3">
<tr><td>Usuario:</td><td><input type="text" name="user" maxlength="30"></td></tr>
<tr><td>Contraseña:</td><td><input type="password" name="pass" maxlength="30"></td></tr><br>
<tr><td>Nombre:</td><td><input type="text" name="name" maxlength="30"></td></tr>
<tr><td colspan="2" align="right"><p>
<input type="submit" name="subjoin" value="Join!">
</p></td></tr>
</table>
</form>
</body>
</html>

<?
}
?>
login.php
<?

/**
* Checks whether or not the given username is in the
* database, if so it checks if the given password is
* the same password in the database for that user.
* If the user doesn't exist or if the passwords don't
* match up, it returns an error code (1 or 2).
* On success it returns 0.
*/
function confirmUser($username, $password){
global $conn;
/* Add slashes if necessary (for query) */
if(!get_magic_quotes_gpc()) {
   $username = addslashes($username);
}

/* Verify that user is in database */
$q = "select password from users where username = '$username'";
$result = mysql_query($q,$conn);
if(!$result || (mysql_numrows($result) < 1)){
return 1; //Indicates username failure
}

/* Retrieve password from result, strip slashes */
$dbarray = mysql_fetch_array($result);
$dbarray['password'] = stripslashes($dbarray['password']);
$password = stripslashes($password);

/* Validate that password is correct */
if($password == $dbarray['password']){
return 0; //Success! Username and password confirmed
}
else{
return 2; //Indicates password failure
}
}

/**
* checkLogin - Checks if the user has already previously
* logged in, and a session with the user has already been
* established. Also checks to see if user has been remembered.
* If so, the database is queried to make sure of the user's
* authenticity. Returns true if the user has logged in.
*/
function checkLogin(){
/* Check if user has been remembered */
if(isset($_COOKIE['cookname']) && isset($_COOKIE['cookpass'])){
$_SESSION['username'] = $_COOKIE['cookname'];
$_SESSION['password'] = $_COOKIE['cookpass'];
}

/* Username and password have been set */
if(isset($_SESSION['username']) && isset($_SESSION['password'])){
/* Confirm that username and password are valid */
if(confirmUser($_SESSION['username'], $_SESSION['password']) != 0){
/* Variables are incorrect, user not logged in */
unset($_SESSION['username']);
unset($_SESSION['password']);
return false;
}
return true;
}
/* User not logged in */
else{
return false;
}
}

/**
* Determines whether or not to display the login
* form or to show the user that he is logged in
* based on if the session variables are set.
*/
function displayLogin(){
global $logged_in;
if($logged_in){
     echo "Bienvenido <b>$_SESSION[username]</b>,.";
     echo "<br><a href=\"account.php\">· Cuenta</a></br>";
     echo "<br><a href=\"logout.php\">· Desconectar</a></br>";
}
else{
?>
<form action="" method="post">
<table align="left" border="0" cellspacing="0" cellpadding="3">
<tr>
<td width="73">Usuario:</td>
<td width="49"><input name="user" type="text" size="8" maxlength="30"></td></tr>
<tr>
<td>Contraseña:</td>
<td><input name="pass" type="password" size="8" maxlength="30"></td></tr>
<tr><td colspan="2" align="left"><div align="left">
<input type="checkbox" name="remember">
Recordarme.</div></td></tr>
<tr><td colspan="2" align="right"><div align="center">
<input type="submit" name="sublogin" value="Login">
</div></td></tr>
<tr>
<td colspan="2" align="left"><a href="register.php">Registrate!</a></td>
</tr>
</table>
</form>

<?
}
}

/**
* Checks to see if the user has submitted his
* username and password through the login form,
* if so, checks authenticity in database and
* creates session.
*/
if(isset($_POST['sublogin'])){
/* Check that all fields were typed in */
if(!$_POST['user'] || !$_POST['pass']){
die('You didn\'t fill in a required field.');
}
/* Spruce up username, check length */
$_POST['user'] = trim($_POST['user']);
if(strlen($_POST['user']) > 30){
die("Sorry, the username is longer than 30 characters, please shorten it.");
}

/* Checks that username is in database and password is correct */
$md5pass = md5($_POST['pass']);
$result = confirmUser($_POST['user'], $md5pass);

/* Check error codes */
if($result == 1){
die('That username doesn\'t exist in our database.');
}
else if($result == 2){
die('Incorrect password, please try again.');
}

/* Username and password correct, register session variables */
$_POST['user'] = stripslashes($_POST['user']);
$_SESSION['username'] = $_POST['user'];
$_SESSION['password'] = $md5pass;

/**
* This is the cool part: the user has requested that we remember that
* he's logged in, so we set two cookies. One to hold his username,
* and one to hold his md5 encrypted password. We set them both to
* expire in 100 days. Now, next time he comes to our site, we will
* log him in automatically.
*/
if(isset($_POST['remember'])){
setcookie("cookname", $_SESSION['username'], time()+60*60*24*100, "/");
setcookie("cookpass", $_SESSION['password'], time()+60*60*24*100, "/");
}

/* Quick self-redirect to avoid resending data on refresh */
echo "<meta http-equiv=\"Refresh\" content=\"0;url=$HTTP_SERVER_VARS[PHP_SELF]\">";
return;
}

/* Sets the value of the logged_in variable, which can be used in your code */
$logged_in = checkLogin();

?>
logout.php
<?
session_start();
include("database.php");
include("login.php");

/**
* Delete cookies - the time must be in the past,
* so just negate what you added when creating the
* cookie.
*/
if(isset($_COOKIE['cookname']) && isset($_COOKIE['cookpass'])){
setcookie("cookname", "", time()-60*60*24*100, "/");
setcookie("cookpass", "", time()-60*60*24*100, "/");
}

?>

<html>
<title>Logging Out</title>
<body>

<?

if(!$logged_in){
echo "<h1>Error!</h1>\n";
echo "You are not currently logged in, logout failed. Back to <a href=\"main.php\">main</a>";
}
else{
/* Kill session variables */
unset($_SESSION['username']);
unset($_SESSION['password']);
$_SESSION = array(); // reset session array
session_destroy(); // destroy session.

echo "<h1>Logged Out</h1>\n";
echo "You have successfully <b>logged out</b>. Back to <a href=\"main.php\">main</a>";
}

?>

</body>
</html>
account.php
<?
/* Include Files *********************/
session_start();
include("database.php");
include("login.php");
/*************************************/
?>

<html>
<meta http-equiv="Content-Language" content="es">
<title>Jpmaster77's Login Script</title>
<body>
<div align="center">
<center>
<table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="679" height="528" id="AutoNumber1">
<tr>
<td width="679" height="71" colspan="3"> </td>
</tr>
<tr>
<td width="117" height="24"> </td>
<td width="446" height="24"> </td>
<td width="109" height="24">
<p align="center">LOGIN</td>
</tr>
<tr>
<td width="117" height="416"> </td>
<td width="446" height="416"><p><u><strong>Datos de cuenta:<br>
<br>
</strong></u>Nombre:<u><strong> <? echo $_SESSION[username] ?></strong></u></p>
</strong></u>Nombre:<u><strong> <? echo $_SESSION[longname] ?></strong></u></p>
</strong></u></p></td>
<td width="109" height="416"> <? displayLogin(); ?>
<br><br></td>
</tr>
<tr>
<td width="672" height="12" colspan="3"><u><strong>Explorador:</strong></u> <?php
function FUNC_brouserUsr(){ //echo FUNC_brouserUsr();
if((ereg("Nav", $_SERVER["HTTP_USER_AGENT"])) || (ereg("Gold",
$_SERVER["HTTP_USER_AGENT"])) || (ereg("X11",
$_SERVER["HTTP_USER_AGENT"])) || (ereg("Mozilla",
$_SERVER["HTTP_USER_AGENT"])) || (ereg("Netscape",
$_SERVER["HTTP_USER_AGENT"])) AND (!ereg("MSIE",
$_SERVER["HTTP_USER_AGENT"]) AND (!ereg("Konqueror",
$_SERVER["HTTP_USER_AGENT"])))) $browser = "Netscape";

elseif(ereg("MSIE", $_SERVER["HTTP_USER_AGENT"])) $browser = "MSIE";

elseif(ereg("Lynx", $_SERVER["HTTP_USER_AGENT"])) $browser = "Lynx";

elseif(ereg("Opera", $_SERVER["HTTP_USER_AGENT"])) $browser = "Opera";

elseif(ereg("Netscape", $_SERVER["HTTP_USER_AGENT"])) $browser = "Netscape";

elseif(ereg("Konqueror", $_SERVER["HTTP_USER_AGENT"])) $browser = "Konqueror";

elseif((eregi("bot", $_SERVER["HTTP_USER_AGENT"])) ||
(ereg("Google", $_SERVER["HTTP_USER_AGENT"])) || (ereg("Slurp",
$_SERVER["HTTP_USER_AGENT"])) || (ereg("Scooter",
$_SERVER["HTTP_USER_AGENT"])) || (eregi("Spider",
$_SERVER["HTTP_USER_AGENT"])) || (eregi("Infoseek",
$_SERVER["HTTP_USER_AGENT"]))) $browser = "Bot";

else $browser = "Other";
return $browser;
}

echo FUNC_brouserUsr();
?>
<u><strong>Hora:</strong></u> <?
echo date ( "G:i:s" );
?>
<u><strong>Dirección IP:</strong></u> <?
echo $_SERVER [ 'REMOTE_ADDR' ];
?>
</tr>
</table>
</center>
</div>

</body>
</html>
main.php
<?
/* Include Files *********************/
session_start();
include("database.php");
include("login.php");
/*************************************/
?>

<html>
<meta http-equiv="Content-Language" content="es">
<title>Jpmaster77's Login Script</title>
<body>
<div align="center">
<center>
<table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="679" height="528" id="AutoNumber1">
<tr>
<td width="679" height="71" colspan="3"> </td>
</tr>
<tr>
<td width="117" height="24"> </td>
<td width="446" height="24"> </td>
<td width="109" height="24">
<p align="center">LOGIN</td>
</tr>
<tr>
<td width="117" height="416"> </td>
<td width="446" height="416"> </td>
<td width="109" height="416"> <? displayLogin(); ?>
<br><br></td>
</tr>
<tr>
<td width="672" height="12" colspan="3"><u><strong>Explorador:</strong></u> <?php
function FUNC_brouserUsr(){ //echo FUNC_brouserUsr();
if((ereg("Nav", $_SERVER["HTTP_USER_AGENT"])) || (ereg("Gold",
$_SERVER["HTTP_USER_AGENT"])) || (ereg("X11",
$_SERVER["HTTP_USER_AGENT"])) || (ereg("Mozilla",
$_SERVER["HTTP_USER_AGENT"])) || (ereg("Netscape",
$_SERVER["HTTP_USER_AGENT"])) AND (!ereg("MSIE",
$_SERVER["HTTP_USER_AGENT"]) AND (!ereg("Konqueror",
$_SERVER["HTTP_USER_AGENT"])))) $browser = "Netscape";

elseif(ereg("MSIE", $_SERVER["HTTP_USER_AGENT"])) $browser = "MSIE";

elseif(ereg("Lynx", $_SERVER["HTTP_USER_AGENT"])) $browser = "Lynx";

elseif(ereg("Opera", $_SERVER["HTTP_USER_AGENT"])) $browser = "Opera";

elseif(ereg("Netscape", $_SERVER["HTTP_USER_AGENT"])) $browser = "Netscape";

elseif(ereg("Konqueror", $_SERVER["HTTP_USER_AGENT"])) $browser = "Konqueror";

elseif((eregi("bot", $_SERVER["HTTP_USER_AGENT"])) ||
(ereg("Google", $_SERVER["HTTP_USER_AGENT"])) || (ereg("Slurp",
$_SERVER["HTTP_USER_AGENT"])) || (ereg("Scooter",
$_SERVER["HTTP_USER_AGENT"])) || (eregi("Spider",
$_SERVER["HTTP_USER_AGENT"])) || (eregi("Infoseek",
$_SERVER["HTTP_USER_AGENT"]))) $browser = "Bot";

else $browser = "Other";
return $browser;
}

echo FUNC_brouserUsr();
?>
<u><strong>Hora:</strong></u> <?
echo date ( "G:i:s" );
?>
<u><strong>Dirección IP:</strong></u> <?
echo $_SERVER [ 'REMOTE_ADDR' ];
?>
</tr>
</table>
</center>
</div>

</body>
</html>

Ahi está todo, muchisimas gracias de antemano!
Un saludo.

PD:
CREATE TABLE users (
username varchar(30),
longname varchar(32),
password varchar(35));