Hang in there! Plateaus are really frustrating.
Like 2frustrated said, try drinking more water. It made a huge difference for me.
Chances are that you have built up a LOT of muscle since you say you started from nothing. Once I started working out with a lot of cardio (running), I was basically plateaued for a few months! Now I am finally losing again. Losing 1 inch off your waist in six weeks of exercise is certainly not slow -- I usually lose about half an inch every four weeks, so an inch in six weeks is great!
Before you worry about your weight loss slowing down, take a look at your progress with your workouts. Are they getting easier? Are you feeling stronger and healthier? Because being healthy and fit is what it's really all about, more than the number on the scale. The last time I was upset about the scale not moving I thought to myself "Well, it hasn't moved more than a couple pounds for over a month. But in that time, I have improved my speed and endurance for running by a huge amount! So I'm definitely getting more fit." It's hard to convince yourself that fitness is better than being thin sometimes.
http://www.3fatchicks.com/forum/showthread.php?t=2410 has a lot of tips for getting off a plateau. Good luck! Don't forget that if it takes as long to get the weight off as it took to put it on, you're more likely to keep it off!