i can see why they have done this... makes good sense... but after all the crap they been saying about iplayer using up too much bandwidth on virgins broadband network i think they have done this to save them selves a few quid
you might remember virgin saying not all that long ago that they wanted to charge bbc to let the customers download as much as they would like!!
ok it IS good for the customer..... but they allways gonna sugar coat this as something other than what it is... a money saving exercise to save their failing oversubscribed broadband network