Someone on our faculty forum mentioned that her students weren't seeing her announcements, and that she could tell because there was no date on "Posted On."  I just checked my announcements, and not only is there no date, each on has a "U" on the left-hand side, indicating that it was unread.

What's going on here? Many of my announcements are very important, and if my students aren't seeing them, it creates a real problem.  (I've attached a screenshot, but it may be too small to see.)