i just got 46z4100 (have 46xbr2 also) - the highest output resolution from my computer is 1440x900 - my xbr2 will display this resolution my z4100 will not (it will display 1920x1080 from other sources fine). my z4100 will display my computer output but with a lower resolution. Is this normal? Have others noticed this? btw the z4100 is sooo much better than xbr2.