I didn't look at the article, but I know that sometimes low carb does not help the serotonin levels....but at the same time, I wouldn't quit your plan. One thing to try is to have some carbs, something healthy before you go to bed. Have you seen a book out called "Potatoes, Not Prozac" by Kathleen DesMaisons...? She goes into a lot of detail about depression, and I am pretty sure she recommends low carb during the day, and a small baked potato before bed, one without any proteins added (no cheese or cottage cheese on top, etc). It's supposed to release just enough insulin to allow serotonin to pass the blood brain barrier if I remember correctly. Some people use a banana, some use sweet potato or some oatmeal. Something healthy though. Check out the book and see what you think.

ps. I recently had some Epoisses de Bourgogne fromage, it was great! Is your nick name related to that?