On several occasions, I've composed a reply to someone else's post and, when I hit the Post My Reply button, nothing happens. The little circle at the bottom that indicates that the action is in process goes round and round, but the reply never gets accepted into the thread. Usually this happens when I have spent some time on a longish reply. Early on, I would get tired of waiting, get out of the thread and lose my post. Now I know enough to copy the text before I leave the thread, so I can paste it back in when I hit Reply again. Still, I wonder why this happens. Is there a time limit on how long a reply box can be open before the reply is posted?