So the comments are posting, you just have to open a new tab to view them since the page never forwards once you hit "add reply". I don't know if anyone has a solution to this, but when it happens to me, I just open a new tab to check it's posted, close the old tab, and then continue on as usual. But, how often is it happening? Every time you post? I see it fairly infrequently, and usually when the site is having glitches.