We have had the same problem. Our supplier told us that Pioneer is still testing the reliability of a cable over 12ft. They suggested to us not to use anything over 8ft for the time being. On the same note...Why in God's name can't Pioneer be kind enough to add direct input selection to their new plasma's?!?!? It makes "idiot proofing" a remote much easier. You'd figure with the price of the display, that you wouldn't have to cycle through the inputs. Just my 2 cents