I hear you! This is my first time applying to grad school (economics PhD programs) and based on gradcafe's results and other sources, I expected to hear back from most programs around mid-February, so I had prepared myself for that and wasn't thinking much about it before then. Totally out of the blue, I got a decision from one of my programs (Ohio State) a week ago, and it has seriously messed with my head. Now I'm checking every day obsessively even though most, if not all, of my other 12 applications will stick to that mid-February timetable.
For others who haven't heard anything: if you haven't already, one thing that helped me is searching through previous years of gradcafe results for particular programs and schools (e.g. searching for "ohio state economics"). That will give you an idea of their general timetable--each department within each school notifies at a different time, and looking at historical results will give you an idea of the first wave, second wave, waitlist, etc. It's no guarantee, but it looks like most schools are fairly consistent.