Have you taken any time off from your workout?

How long did it take you to drop 10Kg?

I'm here looking for advice also, so I may not be the best person to give it. But, if your fat loss is 'flatlining', then just take a week off from training.

I also find that if I am having a low fat loss week, it helps to completely change what I am eating to different calorie equivalent foods. Spend a week eating lots of fibre rich foods, and then switch back to your normal diet, see if that helps.

Bear in mind that when the body is under stress, it will attempt to preserve fat. So whilst any kind of workout will burn some fat, you are likely to put fat back on as a result of your bodys natural stress defense mechanism. So basically the best way to lose fat is through diet rather than exercise.

If I were in your shoes, I'd vary my diet for a week, and if that failed, I would take a week off of my workout.

A guy I workout with had this same problem, and he went for a colonic irrigation... Sure enough, he is now regularly losing weight again.