Errors when Commenting…

I offered to help a friend out with a problem she was having with her weblog. Turns out, I have no clue what is going on. I’m a noob to WP myself 😉 hehe

Anyways, she’s getting the following errors when someone tries to post a comment:
http://www.bubblessoc.net/images/errors.gif

functions.php lines 1355-1359:

if ( preg_match($pattern, $author) ) return false;
if ( preg_match($pattern, $email) ) return false;
if ( preg_match($pattern, $url) ) return false;
if ( preg_match($pattern, $comment) ) return false;
if ( preg_match($pattern, $user_ip) ) return false;


wp-comments-post.php lines 90-102:

setcookie('comment_author_' . $cookiehash, $author, time() + 30000000, COOKIEPATH);
setcookie('comment_author_email_' . $cookiehash, $email, time() + 30000000, COOKIEPATH);
setcookie('comment_author_url_' . $cookiehash, $url, time() + 30000000, COOKIEPATH);

header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
header('Cache-Control: no-cache, must-revalidate');
header('Pragma: no-cache');
$location = (empty($_POST['redirect_to'])) ? $_SERVER["HTTP_REFERER"] : $_POST['redirect_to'];
if ($is_IIS) {
header("Refresh: 0;url=$location");
} else {
header("Location: $location");

Anyone have a guess what could be the problem? She said that she hasn’t installed any hacks. I’m assuming it has something to do with the fact that she has her WP files installed in a separate directory from the root.

Please let me know if you can assist me! Thanks in advance 🙂