cookies don't work for one user?

[michaellunsford]

walked an end user through the process of checking that cookies were turned on in his browser, but my little cookie test page says he doesn't. Seems to work for everyone else though. Any ideas?

note to the code -- this is an approximation of the acutal code.
[code]
<?
    if(!$_GET['cookietest']) {
        setcookie("test-cookie","test");
        header("Location :".$_SERVER['PHP_SELF']."?cookietest=true");
        die();
    } elseif ($_COOKIE['test-cookie']!="test") echo "COOKIES ARE DISABLED";
    else echo "You're good. Cookies are ON";
?>
[/code]