[deanhills]

Hello,
On having a quick glance I can try to guess the causes of this problem:
1. There might be some actions taken like, at first there were 2 different posts and later on they got merged, 
2. There might be splitting of posts after posting.
3. After posting to a forum where postcount is not counted, the post/thread got transferred to a forum where postcount was enabled or wise versa.

Aha! I'm indeed guilty here.  For example there was someone advertising a VPS service who posted three posts in succession and I then merged them.  

If I may ask @Dynamo, myBB used to in the past automatically merge posts when they were made within X minutes of one another.  Although I guess that won't solve it, as merging is merging, but was wondering what happened as currently even if I make a second post within a minute of the first, it still gets posted as a separate post.  When it happened to me in a thread where I had three responses, I also had to merge them into one post.

And yes.  I did a lot of splitting of posts from a Feedback Thread that had add on suggestions made.

And yes, I have moved threads around.  I remember a support thread that was asking about a non-support related issue.