As an aside, I sometimes have trouble with those images.  If I upload them from my computer I pre-size them to 252 pixels wide, but if I post them from elsewhere I manually manipulate them with insert/edit image/appearance to that size.  Sometimes it works, sometimes it doesn't.  The Home Page of course doesn't have the same auto-size functionality of the message board.  I mention that because I'm aware that the click-to-enlarge function may not work on the Home Page for that reason.