My profile tells me permanently that I have 1 notification which is an unread visitor message.
There is in fact a deleted visitor message which seems to have cause the problem.

Anyone got any suggestions ?

I had this too hun,
Delete the deleted entry yourself ..
Then it should go away,
I cant remember where the option is, but i think its there on the deleted post for you to also delete
xx

Ok just checked,
There is a tick box next to the date on the post,
click it, then at the bottom of the screen is a drop down menu to delete it hun
HTH x

Thanks sweetie