Despite turning the "dolby digital output" option in the Audio menu to ON... the set (42LG7000) only outputs a 2channel stereo signal. Most infuriating as the manual and the specs - and the on-screen menu confirm a dolby digital output mode on the optical audio port. connecting the hifi to the skyHD box optical port direct cures the problem, but what about the faulty tv output? Very annoying as I have multiple HD sources (PC, BlueRay, and SkyHD) so I have to keep disconnecting optical cables, when all I should need is one optical cable going from the tele to the hifi. Who else has noticed?