Two shadows from one directional light

Hi, i have a pretty weird problem in my project. There is only one directional light in the scene, but every object is casting two shadows, at different angle. There is also skylight, skysphere with emissive material (use emissive for static lighting is unchecked). Directional light is stationary. There are also some small point lights and spot lights (in the building).
Do you know why is this happening ?
Thans for the answer.

Here are the screenshots.

http://s7.postimg.org/xf1qv6oez/Highres_Screenshot00025.png
http://s7.postimg.org/q0cf2t2jf/Highres_Screenshot00026.png

EDIT: I already checked the other thread where they recommended deleting light and placing a new light, did not work for me.