Why aren't i losing more weight?

That amount of exercise means you are going to be increasing muscle mass (Particularly in your legs from the running/crosstraining etc), you are probably losing more than 2 pounds a weeks worth of fat, then adding muscle (which weighs more than fat) meaning the scales show less of a loss in terms of pure mass. what you want to be doing is measuring each area of your body with a tape measure rather than scales and keep track of inches rather than pounds. if you look in the mirror you will probably see a difference in terms of muscle definition. another factor is that the more you work out the harder it becomes to keep on improving so make sure yuo increase the intensity or duration of your workouts where possible. when i started at the gym i was 12 stone, i then dropped to around 11 as i lost fat and now i am around 11 and a half from muscle growth so in terms of mass u have changed very little but if you look at before and after pictures you can see a much greater difference! hope that helps and good luck : )