Eating until lunch and then stopping isn't going to help, it'll hurt. You need to do the 5-6 small meals a day, so your metabolism is constantly going. If you eat it all at once, then your metabolism stops right away, and you're not burning as much as you could be. Without the expectation of a regular fuel-input, (or enough fuel-input) your body will start burning muscle for energy, which slows down your metabolism and makes you go into that "starvation mode" everyone was talking about.
Trust me on this, it's happened to me, when I get too overexuberant about calorie & fat restriction. And one of the habits that's led to (my) weight-gain is only eating once a day. Your body will lose weight when it feels comfortable, like it has nothing to lose by running efficiently. If you provide it with the right number of calories and nutrients, it'll say, "I'm getting everything I need. I can dump some of the storage, because times are good, and it's not likely I'll starve anytime soon."
While weight-storage is mostly a nuisance to most of us today, back when we were cavemen (not that far ago in the evolutionary scale of things) or even in the last couple hundred years, (or in 3rd world countries today) people are facing starvation and malnutrion on a daily basis. The only reason they've been able to survive as a people for so long is the human body's amazing ability to prepare and deal with the worst conditions. Unfortunately, it means it's not going to give up on that fat so easily - especially if you are proving it's actions are justifiable by not eating enough or frequently enough.
The key is to find the balance that your body and you can live with, and to constantly trick your body into losing, by making it think plenty of food is available (while not going overboard), and by exercising it enough to make it work, but not so frequently that it gets "too" efficient again.
Hope that puts it in perspective. I know it's tough - you think the harder you work and the less you eat, the weight will fall off, and it gets discouraging when just the opposite happens. I'm sure many other people here (besides myself) have learned this the hard way, but moderation seems to be the key.
--Janis