[INVALID] repeating events only in a certain page

Hi all,

you can see at this page:

http://novasystem-srl.com/servizi-0

on the right sidebar there is a fullcalendar, which shows the same event repeated 3 times. The same block is displayed on all the products pages, i.e.:

http://novasystem-srl.com/prodotti/solid-edge

and there everything is ok, no repeated events. In the backend it's the same block/view, with the option to be visible only in those cases:

node/servizi-0
node/servizi-0/*
node/prodotti
node/prodotti/*

so how can this be? How do I get rid of the repeated events?

thanks a lot