Recently there have been people complaining about their postcount decreasing.
There isn't much to say about this other than that there are only 2 reasons which can cause that:
- A post you made/A thread you have posted in has been deleted
- A thread you have posted in which was a forum where posts count was moved to a forum where posts don't count
So, if your postcount has gone down, it just means one of those 2 things have happened, there is nothing to worry about.
Postcount doesn't really matter anyway.