new 3ds viewing 3d question??

Just play with it until you find a distance/setting that has no cross talk. It is different for everyone.

I found it took my eyes a little while to get used to the 3D effect, so I started mostly with the slider at the halfway mark (it can vary a bit from game to game) and eventually cranked it up to full for most games (again, it can vary). In the beginning I think I was trying too hard to consciously see the 3D, but I think it's better to just look at the screen normally and let the effect come to your eyes naturally.

Not noticably, per se. The real issue is that bright-light can make it hard to see stuff on the 3DS screen, but that's nothing to do with the 3D. I play on the train daily...and the only time I really have a problem is when the sun shines directly on my face in the AM, making my reflection so bright I can't see the game.

Bought one Saturday and it will be returned. The 3d gives me a headache and turning it off defeats having bought one. Nice hardware and the game selection is picking up nicely.