Net Folders resending an invite

[Hugh]

I have one computer which has recently started displaying
the net folder updates in the inbox, I understand this to
be caused by a fault in the Rules Wizard. The quickest way
I image this to be fixed is for the server to resend the
invite and the user to reaccept. My problem is that if I
delete their name off the folder list and then reentered
it, the server still treats it as an existing member and
don't resend the invite.
Any Ideas?

Hugh