i'me on windows vista, worked fine until it updated itself to 4.16.1 then would'nt work get 4 clear lines but firewall on world (and 25 people tried message?) etc, then blocked me out completely when i got new sky HD box connected, and 2 sons can't connect to x box live, could it be a problem with sky broadband blocking it? i've lifted firewall put port numbers in, deleted reinstalled,don't know what to do now,