[Peroni]

Purely anecdotal I'm afraid but considering how pg likes to keep the algorithms relatively secret, it's probably as good as you'll get.

Anyway, a good friend (and a relatively new member of HN) upvoted a post (not my post) and after refreshing the page we noticed nothing had changed. I upvoted the same post and my upvote was instantly registered. Seen that happen a few times now with different users.

[deepak-kumar]

Yes. It happened with a friend of mine few weeks back and that's what made me ask this here.