Ive noticed at night that my character shadow is in the wrong place. That is, when the moon Masser, the brightest light source in the night sky, is at my back my shadow is behind me. Also Ive had the ugly shadows but using the nvidia inspector and some ini tweaks Ive minimized them. I like the night brightness- people who argue for darker nights should remember Skyrim is on a different planet and has 2 huge moons in the night sky, so it would naturally be brighter.