I have a Panasonic L42D25, Panasonic BT230 home cinema system and SKY HD. If I connect SKY HD to the TV then route the sound via optical out or ARC on the TV to my BT 230 the sound drifts out of sync. If I change the sound input or reboot the BT230 it re-syncs but then slowly drifts out again. After about an hour the sound can be 0.5 seconds behind the picture. Setting audio delay makes no difference as the sound is behind the picture, so it actually makes it worse. Sound is in sync when routed through the TV speakers and also when coming from a DVD\Blu Ray playing on the BT230 I have solved this problem by connecting sky directly to the BT230, however there are two other people on the Amazon forums having the same problem with the D25 range of TVs. The sound is clearly getting delayed with the TV. Does anyone else have this issue - I think it may be a design problem on the D25 range of TVs?