Don't really have any shadows yet, except what silhouette's from the sun object.
Here is a video. 4 lights in the scene plus the sun object itself. Sun object is at default from install.
light over the sink, yellow, sat down to 100, range 500, static or dynamic changes nothing for shadows.
light over stove, yellow default settings.
Light inside right island cabinet, blue default settings.
Light by ceiling by door, red default settings.
Brightness <F5> down to 20 or 30
Lighting is still a WIP for the Betas.
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s), 4gb RAM, Nvidia gtx660, Windows 7 Pro 64bit