I'm in the process of buying a five-year-old house. The basement is unfinished. I'm worried about dampness in the basement concrete foundation. A home inspector took a look at our basement, and said that he detected no mildew. He also detected no evidence of past leaks. However, I can see discoloration / stains / lines on the concrete foundation. Here is a picture: See a larger image here. Our real estate agent believes that this is normal, and the result of condensation, and that we need not worry. Judging by the pictures, does this look "normal"? Or is there a problem with our concrete basement foundation? Thanks.