Just to keep the thread alive - I've left the box, checking it each day - and the problem hasn't reoccurred. So tonight I'm going to enable the Sky Italia Open TV (HotBird on 13.0) provider on CrossEPG and see if the problem comes back. Sorry for the slow replies - I effectively have to wait a day each time to check whether things are working or not. If the problem comes back (I would expect it to), I'll post again with confirmation.