All of you, try shaking things up if you truly feel that you're not losing well. Add in a few calories/carbs, or decrease both. Try not exercising for a couple of days if you've been really working hard, or, if you haven't been exercising, add in a little extra. I'm not talking marathons here, just add in 15 minutes on the treadmill or bike, or take away that same 15 minutes if you've been steadily doing it. Change the exercise you're doing. Sometimes you just have to shock your body out of a rut.
UP your Water. Water makes us feel better, removes toxins, and helps flush that nasty fat out of our systems. The recommendation is 64 oz daily, but I believe that power-losers like Lil Miss Diva drank up to 100 oz a day during the losing phases.
Make sure you're getting in your Protein and that you are eating ENOUGH. While it may seem that 500 calories a day is a terrific way to lose, it's not really. Your body need fuel to run properly. Without fuel, it holds onto every calorie it gets.
I'm religious about the water and protein and getting in my Vitamins. Everything else is pretty flexible for me. I've had a couple of stalls and my losses have really slowed down since February, but I've been working out hardcore (for me) and I'm seeing results in my size and in my measurements. When I'm not losing pounds is when I see myself shape-shift. I'll take the trade-off.