Texas Doctors: Mold No Toxic threat:

http://www.tcais.org/media/news/article_092102.php

Centers for Disease Control:

"There are very few case reports that toxic molds (those containing certain mycotoxins) inside homes can cause unique or rare health conditions such as pulmonary hemorrhage or memory loss. These case reports are rare, and a causal link between the presence of the toxic mold and these conditions has not been proven. "

http://www.cdc.gov/nceh/airpollution/mold/stachy.htm#Q1

that its a darn good idea..whenever possible,to keep water/moisture from getting in a house..mold makes for an unhealthy living environment.