Right, Update. Skype messages now appear when I get one, but when I open the notification center, I don't see it. It simply appears at the top and after it disappears if missed it, I wouldn't know I received one. The now on the Skype icon it shows how many unread messages. What is weird though is that it just started doing that out of the blue. I didn't enable anything new. Hmmm. Sure hope it stays that way.