i have a laptop thats connected internet through a motorola model sb5100 as my router to the box telewest and having done some research on the router it doesnt have a firewall in its hardware.....my LW does show a globe with a wall

.....i have just upgraded to the latest version (wish i didnt now) but didnt have any problems watsoeva with the previous version!
Could someone please advise me what to do!
Thank You