[Scott MacVicar]

that would be my bad

$DB_site->query("INSERT INTO loginlog (loginid, ip, username, password, userid, atime) VALUES ('','$ipaddress', '$username', '$password', '$user[userid]', '".time()."')");

should be

$DB_site->query("INSERT INTO loginlog (loginid, ip, username, password, userid, atime) VALUES ('','$ipaddress', '".addslashes($username)."', '$password', '$user[userid]', '".time()."')");