I came across this press release dated Jan 21, 2009 from Lennar on Miami’s Website At that time Knauf Plasterboard Tianjin Co. Ltd. of China was the suspected culprit, but has since included others. Lennar states in the press release that the majority of their homes that might have the Chinese Drywall are in Manatee County.

Residents inhabiting a dozen Southwest Florida homes are being relocated so the builder, Lennar Homes, can rip out Chinese drywall that corrodes interior fixtures and may cause long-term health hazards. Lennar is paying all costs of relocation for the residents, including lodging, and some have already moved, according to a statement from Darin McMurray, Lennar division president. Read more here…

http://www.miamidade.gov/buildingcode/Library/TEMP/Chinesedrywall.pdf