You mean the 'Admin' link on the right hand side:
*Admin*, Settings, Plugins, Users
That's pointing to Monty still? You did a refresh right :-) Because on my 1.5.1 install it points to wpmu-admin.php as expected, or am I looking at the wrong menu/link?
Anyway, clearly the way I have it set up is not the best way. I never liked the idea of putting a file within wp-admin. I know before I had tried to use
add_submenu_page ('wpmu-admin.php' ...
but it wasn't working quite as I wanted.
It's clear the best way is to use add_submenu_page() , and I'll need to update the montyspam/admin.php file (i.e. moving the stuff into a function) which will take a little time, but should not be too much of a challenge.
So rather than trying a temporary fix, I'll get it properly fixed.