Hello, I'm a first timer so forgive if this has been dicussed already. Can anyone tell me why some TV shows on iTunes which were previously available in HD, are now only available in SD? Two examples are Legend of the Seeker and season 5 of Lost (the promo content was previously available in HD). Also when I tried to purchased episode 11 of Fringe in HD and in SD, I recieved a message stating "THE ITEM YOU TRIED TO BUY IS NO LONGER AVAILABLE". I was able to buy episode 10 in HD with no problem. Many Thanks.