I never ran it with windows, so I only know about linux. At first I had quite a few graphics crashes (although, not full kernel panics, so I was able to still use the power button). These seem to be because sandybridge is still so new.

About a week after getting it I noticed a dead red subpixel, luckily samsung have a 14 day zero dead pixel warranty, so I was able to get it replaced from the store I bought it from. I haven't had many crashes since then, but I also updated the kernel to 39 around the same time, so I'm not too sure what caused it to get better (I used the same linux installation from my old laptop).

The touch pad is a pleasure to use, unlike the ones on previous laptops I've used. Battery life would be 3-5 hours depending on load. The keyboard backlight seems to stay on when the lid is closed, I haven't looked into ways to control it on linux yet. The mini-hdmi plug will be a bit annoying, especially because the one adapter I bought doesn't fit (need to get out the metal file, make the adapter slimer). I'm also not sure where I'd get another ethernet adapter (seems to be a custom job).