fustrated

You're not going to be gaining muscle unless you're lifting heavy, and for longer than 15 minutes at a time (which is what you said you were doing back in April - 1 hour on the treadmill and 15 minutes of lifting).

What's more likely is that you're overestimating your activity level or exercise calories and underestimating how much you eat. Those aren't accusations; I was off by nearly 400 calories a day (a day!) when I started MFP just over a year ago, and I use one of the most accurate HRMs available. The following links are very useful; I strongly recommend reading them:

http://www.myfitnesspal.com/topics/show/818082-exercise-calories-again-wtf
http://www.myfitnesspal.com/topics/show/872212-you-re-probably-eating-more-than-you-think

If you have increased the amount of cardio exercise you do, it's also possible that your muscles are storing more glycogen and water as fuel, and retaining water as they repair themselves. But that wouldn't account for 2 months without any loss.

A final point: MFP's estimates are just that: estimates. If you're eating 2010 calories a day, logging all your food as accurately as possible, and maintaining your weight, then for weight loss you're going to have to eat less. I started out at 214.8 lb. (44-year-old 5' 10" male) and my initial calorie goal was 1570 for losing 1.5 lb./week. In reality, aiming for that got me only 1.1 lb./week, hence the 400 calorie discrepancy I mentioned. I was content with 1.1/week, but if I had really wanted 1.5 I would have had to lower my goal or increase my exercise.

I have no idea how many calories you should be eating because you haven't told me how tall you are, your current weight, your activity level etc