A little food for thought if you are aiming towards fat loss:
Glycogen stores are stores of energy that your body uses during weight training and cardiovascular exercise. Although, during weight training glycogen stores are the only energy source used. Thus, completing your cardiovascular routine before weight training will substantially deplete your energy (glycogen) stores needed to complete a proper weight training program. Also, completing your weight training before your cardiovascular program significantly decreases you glycogen stores. So, when you begin your cardiovascular training your body burns less glycogen and more of your stored fat. In summary, to reach you optimal fat burning stages and to have the proper energy to utilize an exercise program, complete your weight training before you cardiovascular training.
I remember P stated this a few months back..January, maybe?