It's possible that you are posting in sections that do not raise post count. (EX: Spam Forum)
Edit: I looked through your post, and saw that most of them have come from the introduction/farewell section. I'm pretty sure that your post count does not raise here. Feel free to correct me if I'm wrong.
I also suggest to read the stickies before posting in threads. Your a fairly new members so it's fine, but I would suggest to read them so you don't get in any trouble in the near future.