Yes - a Sky+ box (and satellite dish)
No - none of the above; apart from the numbers 1 to 9 (and 0) and the 4 coloured buttons we have text, back-up, help, tv guide, box office, services and interactive also, of course volume. channel, select and compass buttons
I don't know - didn't notice the change at first, only when trying to fast forward. But it's probable that we were using the sky remote as this is normal usage for us.
We don't have a DVD connection
Not tried this - I'll go and do it now.
When going through the sky+ box there is no change but on terrestrial only (TV setting on samsung remote) the picture seems to be normal
Success! Many thanks for your help