Luscious,
There have been quite a few times in the past when i seemed to stop losing weight after 30 pounds. At that point it seemed like I had to follow a rigorous diet just to maintain the loss, without much apparent hope of losing more, even though I was still overweight. Eventually I always gave up--it was too hard to keep going without additional reward (i.e. further loss).
On Atkins I have currently lost 63 pounds over 9 months. Somehow when the loss slowed dramatically in December I kept myself on the plan. Maybe now that I'm older it doesn't seem so bad to maintain weight. I was also curious to see what would happen if I didn't give up. Would I eventually lose more? The answer was yes. So now I see it is possible to get past the barrier point or impasse. I just had to be willing to hang out longer than I expected at the plateau.

Good luck!