[Plugin: Math Comment Spam Protection] wordpress 3

problem resolved

http://www.wptavern.com/forum/plugins-hacks/1691-fixing-math-comment-spam-protection-plugin-wordpress-3-a.html#post16541

Find Line 211 math-comment-spam-protection.php

if ( ( !isset($user_ID) ) && ( $comment_data['comment_type'] == ” ) ) { // Do not check if the user is registered & do not check trackbacks/pingbacks

change

if ( ( ! is_user_logged_in() ) && ( $comment_data['comment_type'] == '' ) ) { // Do not check if the user is registered & do not check trackbacks/pingbacks