the query update looks ok to me. The only reasons it wont update is if there is no record to update, If there is error because of wrong field names etc the error should return.

I would check and make sure $username is assigned when used in your query, and check your database it self. say if you want to update user 'bob'

check if 'bob' exist in users and 'bob' is assigned properly to $username before doing query, maybe output it just to test on the screen. I cant think of any other reasons why it will not work if its not givng back any errors.

Also try to remember to assign your variables before attempting to use it. It wont work if you try and use $username and you actually assign it futher down the code because it will be blank when you are calling it before.

<?php
session_start();
include "database.php";
include "edit.inc.php";

if (!$_SESSION["valid_user"])
{
// User not logged in, redirect to login page
Header("Location: main.php");
}

$username = $_SESSION["username"];
if(isset($_POST['submit'])){

$email2 = $_POST['email'];
$msn2 = $_POST['msn'];
$info2 = $_POST['info'];

$updateemail = "UPDATE users SET email = '$email2', msn = '$msn2', info = '$info2' WHERE username = '$username'";

mysql_query($updateemail) or die("culd not edit your info");

echo "info updated";
}

echo "$username";
echo "$email";

$query = mysql_query("SELECT * FROM users WHERE username='$username'");

$all = mysql_fetch_array($query);

$email = $all['email'];
$msn = $all['msn'];
$info = $all['info'];

echo "
<table width=\"100%\" border=0 cellpadding=1 cellspacing=0>
<form name=login action='$PHP_SELF' method=post>
<tr>

<td width=80>Email: </td>
<td width='160'><input tabindex=1 type=text name=username value='$email' style='width:150;'></td>
</tr>
<tr>
<td>MSN: </td>
<td><input type=text name=password value='$msn' style='width:150'></td>
</tr>
<tr>
<td>Info: </td>
<td><textarea rows=\"10\" cols=\"45\" name=\"'info'\" id=\"'info'\">$info</textarea></td>
</tr>
";
echo "
</tr>
<tr>
<td>
<td colspan=\"3\">
<table border=0 cellspacing=0 cellpadding=0 width=100%>
<tr>
<td width=50%>
<input type=\"submit\" name=\"submit\" id=\"submit\" value=\"submit\" />
</form>
</table>
";

echo "<p><a href=\"member.php\">Click here to go back to info page!</a></p>";
?>

have you tried single quotes here?

Basic debugging would suggest that you display (print) the data in the query before and after the query, along with the results of the query after the select. This will confirm the values the query is using, and the results it is getting.

And does the select work correctly in phpmyadmin?