Does the 3DS have any negative symptoms (Vote only if you've played the 3DS

[DarkCronos]

I voted No (0 yes, 1 no). my 3ds arrived yesterday, i played 6 hours straight without experiencing any negative symptom. however my girlfriend tried looking at the screen for a few seconds but she couldn't due to nausea (but she wasn't looking at the screen directly, i think it's just the fault of the 2 images partially overlayed, they combine into a single 3d image only if you look at it from the front)