I still haven't heard anything, but I get the impression that for master's programs, I should expect to wait at least a week or two more for the first few letters to start rolling in. (Side note: Why do my schools still rely on postal mail?!) I'm going absolutely nuts and getting more and more pessimistic as the time passes, even though it makes sense that I haven't heard yet. I get anxious every time I come home and have to check the mail, and I get legitimately angry every time I get a letter from Comcast or Aetna or anything other than any of my grad schools.
I'm very confident in my application, but I know that there are a ton of other great contenders out there. I figure that as a great applicant, I have to get in somewhere out of seven schools, but it doesn't ease my worries...