I've got Sky+ running into my Pio 435XDE but have the sound routed via my Surround Sound Amp. On some programs, but not all, I get a Lip Sync problem. Anyone seen this - and why should it be only 'some' programs? I could understand it if it was all programs on all channels - that would be down to the Plasma taking longer to process the picture than the Amp took to process the sound - but only 'some' programs? It isn't even channel dependant? Any hints would be great. Thanks.