Hi i recently purchased a sony dvd rewriter from ebay, its supposed to be 16x speed but at its best only seems to write at 2.5 x o n a dvd+r disc does anyone know what the problem could be - also i tried to copy south park season 7 to test it ( another e bay purchase) it is five hours long and would of taken up to 1hr 40 mins to burn, However after 45 % and 99 % errors have occured. Can anyone please help me with these problems i have no idea what to do.