One thing on my Samsung, it's native rsolution is 1360x768, which the gpu (nvidia) detects & sets the display to accordingly. This doesn't work well in practice & so I set it to 1024 by something or other & put up with VMC telling me the resolution is incorrect. Bear in mind too that some channels broadcast in 4:3 for some of the time & thus you will get the huuuuge borders on media centre that you describe.