Guys and Gals,
Here is the scoop for me. My 180 day threashold was Sunday 2/18/13. The date reported on the My Disney Experience website is one day off for some reason. I tried on 1/17 and the CM told me I was a day too early. I got up at 5:50 am and started pinging the website. I was able to make reservations for 8/17 but that was it. Everything else (my +10 days) was unavailable although I could select it in the reservations calandar. I spent a fustrating hour on the laptop refreshing, logging in and out etc to no avail. I started calling at 6:50am and when I called at exactly 7am I got through and got to a CM within 4 min. From there we were able to book all of my ADR's to within 10min of the time I was hoping for. The exception was Citricos on our first day which was one hour later.
My experience is that while I love the design and layout of the new website - there are alot of errors and it seems to be useless for making ADR's if you are trying to get premium spots.
Anyway good luck to the rest of you and I hope you get what you were looking for! FWIW I was extreamly fustrated too and by the time I got to a CM She was very good and I was very happy when we finished.
RP