Orissa chief minister J.B. Patnaik is no stranger to allegations of sexual misconductbut the charges have never stuck. The latest, the alleged gang-rape of Anjana Mishra, a 29-year-old housewife, by Patnaik's men on January 9, is threatening his survival, with even his party rivals joining hands with the Opposition to demand his ouster. That Congress president Sonia Gandhi is taking the charges seriously is evident from the fact that she summoned him to Delhi for an explanation.