Comment count issue
I have noticed in last couple of days while checking out discussions that sometimes threads are shown as having no comments but when you open the link you find that actually there are some.
From outside http://www.duolingo.com/comment/704196 has 10 comments, but inside it mentions that nobody commented even if there are 10.
In other cases, the counter from outside seems to lag behind the actual number. http://www.duolingo.com/comment/707131 shows me there are 3 comments, when there are actually 4. It sometimes changes to 4 after I've visited the discussion, but now it's 3 again.