After cleaning up and returning to the spotlight in 2009 with a new album, I Look to You, it appears that Whitney Houston is still fighting her demons. People reports that the embattled singer is participating in an out-patient treatment program for substance abuse. http://www.people.com/people/article/0,,20488032,00.html "Whitney Houston is currently in an out-patient rehab program for drug and alcohol treatment," her rep says. "Whitney voluntarily entered the program to support her long-standing recovery process." Houston, 47, talked about her addiction to cocaine two years ago on Oprah. "Follow me here, Oprah," she started, explaining she was "lacing marijuana...with rock cocaine." http://watching-tv.ew.com/2009/09/14/whitney-houston-oprah-interview/ Source: Entertainment Weekly