It was a damp, dull day for the rest of the media sector. Amid fears over advertising prospects, reports of big writedowns this week at international giants News Corporation and Vivendi added to the gloom. Granada, where chief executive Steve Morrison is under fire, fell 4 1/2p to 85 1/2p. Carlton, its partner in the £1bn ITV Digital fiasco, fell 8 1/4p to 160 1/2p.