Following the advice of HandySolo with regard to my topic http://wordpress.org/support/topic/90658?replies=3#post-459034
and switched of the visual rich editor. I'd been having problems inserting HTML into posts etc. Before s/he replied I'd discovered that at least part of the issues was to do with the Firefox HTML editor that was called from WP, as IE worked "fine".
But when I switched off the WYSIWYG function BINGO my icons turned up!! See http://wordpress.org/support/topic/90502?replies=4 . I've pasted a load of Java errors being reported there so any help on that would be great.
Anyone any ideas what's going on here? Surely the icons should be ON for WYSIWYG and OFF otherwise??