Thank You khmohsin but clearing the browser cache has made no difference. I went on to one of my hubs both as signed in and as not signed in and can clearly see an unmoderated/approved comment.
I know that when I comment on other hubs my comments disappear till they get approval (and some, I note do not get approved).
So the problem remains. I have unmoderated comments that everyone can see. I have not given login information to anyone but anyone in the world can view these unmoderated comments.
kirstenblog - I thought it may be a setting but I have been unable to find it anywhere.