First download the badwords component from mamboxchange.com/frs/?group_id=251&release_id=671

Enable badword filtering in fireboard

Modify components/com_fireboard/template/default/post.php

Look for the following:
if ($fbConfig['badwords'])
{
$badwords = Badword::filter($fb_message_txt, $my);
if ($badwords == "true" {
$fb_message_txt = _COM_A_BADWORDS_NOTICE;
}
}

Replace by:
if ($fbConfig['badwords'])
{
require_once( 'components/com_badword/class.badword.php' );
$badwords = Badword::filter($fb_message_txt, $my);
if ($badwords == "true" {
$fb_message_txt = _COM_A_BADWORDS_NOTICE;
}
}

This fixes the Undefined class name 'badword' error when replying a post.

Works for me.

Thx a lot for sharing! Works great!

Still wish there was a module that would replace bad words with *****s instead of censoring the whole post, but its at least a good start.

Yep it would be great but we will have to wait

I believe that badwords2 will do this. You can find it here.

Then you will need to follow the instructions in this post.