Hi,
I tried this on my test site which has the newest version which I downloaded and installed today. So when you create a post then the message disappears (which is correct). But when I installed this over an existing forum the message is there even though there are many replies.
To reproduce take a snapshot of a forum (3.2.9744) with discussions and replies. Then update to the newest EasyDiscuss and you will see the message on the existing discussions with replies.
Regards.