This corner section of the room is away from the window. It's a small portion of the picture. The overall picture is correctly exposed, but this is a 'dark' corner in the room, so to make it more light, I opened up the shadows here but wasn't expecting this level of noise.
This picture is of the house's 3rd bedroom (this is actually our house that we just listed for sale). The 'full' picture is here: http://bit.ly/ZjsFhy