Not that I am overly bothered but what is happening to the post counter?

I have just been browsing the forums and came accross Warbaby1948's last post. 2 days ago he finished up on 60,100 posts but it is now saying he has 59,974 posts and I also noticed that Master's... Sadistic1's post count has dropped as well from just over 30,000 posts down to 29,750 posts.

Is there a glitch in the system somewhere?

cg