I notice that there are some issues when posting a comment. You type the message and hit "enter" for about a second, nothing happens, so you hit "enter" again, then half a second later, two of the same comment show up, but there isn't an option to delete one, so now you just have two (or more, depending on the impatience of the commenter) hanging around...
I'm still having this issue. For me, it took over 20 seconds for the comment to register, and at one point it didn't register until after I refreshed the page.
This seems to have cleared up!