There is something REALLY strange going on with the post count.

I have hovered over some users to see their post count, only to click it and see a different number.

I did it earlier on Zealots and the number was out by several hundred, I tried it again 30 mins later and it was then correct.

Is there a reason why the two ways of discovering the post count should not be identical?

(I.e. deleted posts, nuked, or counting them as threads started etc)