Thousands of homes built during the housing boom were constructed using drywall imported from China. Now, many of these homeowners are suffering from illness and other maladies assoicated with a defective product. The PBS series "Need to Know" recently expolored the problem. The video is here: http://www.pbs.org/wnet/need-to-know/health/video-home-sick-alleged-ill-effects-from-chinese-drywall/8812/. It is both informative, and scary.