Seems to be working fine for me--have you tried it again? There may not have been any new posts since the last time you were on; also, after about half an hour of being logged in with no activity, all messages are marked as "read." (In other words, if you stay logged in for more than half an hour without doing anything in that time, your session expires and all posts are marked "read," so they won't show up as being "new" for you any more.)