I had contact with the store about the aspect ratio bug.
They told me that there was nothing wrong with the beamer because the specs said the resolution is 1280x800 and that is was logical that the beamer mapped all video formats to this resolution. I told them that because of this the video gets stretched verticaly... they said "what's wrong with that?"... i said "it's ugly!"... then they said "well, that's a matter of taste"... seriously?
what isn't, they obviously do not care. you could try calling Lg, but I guess it would lead you nowhere. cant believe LG would make such a bummer