In this Sept. 17, 2008 file photo, singer Janet Jackson performs during her concert in Los Angeles. (AP Photo/Mark J. Terrill, File)
Janet Jackson has canceled her fourth show in less than a week because of an undisclosed illness. A statement from Jackson said she arrived in Greensboro, N.C., hoping to perform there Saturday, but a local doctor advised that she not perform after it became "evident" she was not fully recovered. Representatives for Janet said she became "suddenly ill" and was hospitalized Monday night in Montreal shortly after she arrived for a show. She also canceled concerts in Boston and Philadelphia on Wednesday and Thursday. Janet is on her first North American tour in seven years.