[ShaMan]

There is no mystery or glitch.

If, a thread you participated in is deleted, you and everyone else who gained a post credit due to that thread loses that post credit(s).

For example, the thread in which you asked me what my signature meant, is gone now if I'm not mistaken, that post credit is gone too for you, me and anyone else who posted to it.

Shit happens, I for one, couldn't care less about the post count, so I don't mind on that aspect.