There are a number of articles in the news about bipolar disorder. I'll post a couple of links; you might want to check Google News section on Medicine. There seem to be a lot of different articles based on the same research.
"Genetic Roots Of Bipolar Disorder Revealed By First Genome-wide Study Of Illness" http://www.sciencedaily.com/releases/2007/05/070508072825.htm
"Severe impairment common in bipolar disorder" http://www.sciam.com/article.cfm?alias=severe-impairment-common&chanId=sa003&modsrc=reuters
"Genetic Roots Of Bipolar Disorder Revealed By First Genome-wide Study Of Illness" http://www.sciencedaily.com/releases/2007/05/070508072825.htm
"Severe impairment common in bipolar disorder" http://www.sciam.com/article.cfm?alias=severe-impairment-common&chanId=sa003&modsrc=reuters