From the Florida Association of Realtors...

How can you tell if a home has Chinese drywall?

It's a simple question without a simple answer. The Florida Department of Health has a Web site section devoted to the problem, however, and it updates information as it comes in.

Since it helps to understand what kind of damage tainted Chinese drywall can cause, one section, "Case Definition with Pictures," includes photos of mirrors, pictures, pipes and other household items impacted by the drywall.

The Web site also explains how the state plans to deal with the problem and includes details on how to file a complaint. For more info, visit the site at: http://www.doh.state.fl.us/Environment/community/indoor-air/drywall.html

An Associated Press review of shipping records found more than 540 million pounds of plasterboard was imported from China between 2004 and 2008 to meet U.S. demand during the national housing boom. Hundreds of people nationwide are now complaining that the material emits fumes that make them sick. They claim it also corrodes copper pipes, blackens jewelry and silverware and ruins air conditioners.

Estimates indicate the drywall may be in more than 100,000 homes, more than 35,000 in Florida alone. The state Health Department has logged 265 complaints so far. Lawsuits against the Chinese manufacturers, builders and suppliers have been filed in several states, including Florida, Mississippi, Alabama and Louisiana.

Companies that produced some of the wallboard said they are looking into the complaints, but downplayed the possibility of health risks.