I had fun last year waiting for my call (not). My CD was out sick, out of town at ACA and some traveling, and i tihnk she was also busy with everything else she had to do. I think that, while they don't keep me waiting until May or anything like that, I am a little low on their priority list since they know that I know I am hired and going to come back. I think it works that way with a lot of the returners, at least ones who have been there for more than 1 summer since my roommate still hasn't gotten the offical call, though she has gotten an email. Of course, her interviewer is also the OE director, so that makes a little more sense.