[ BUILD # : 200711060000 ]
[ JDK VERSION : 1.6.0_03 ]

Repro:
  public void test() {
    if(true) {
      throw new Exception();

    // Comment
    } else {
      System.out.println();
    }
  }


Now use hint in line with throw to surround with try/catch. Result:
  public void test() {
    if(true) {
      try {
        throw new Exception();

        // Comment
      } catch (Exception ex) {
        Logger.getLogger(Test1.class.getName()).log(Level.SEVERE,
null, ex);
      }

    // Comment
    } else {
      System.out.println();
    }
  }


Comment line is being duplicated!