I know a lot of admissions offices are probably slammed right now (some more than others apparently), but have you thought about calling or emailing someone on the admissions committee? In the midst of a panic attack this week, I called Indiana (Bloomington) about the delay in PhD admissions. I spoke with an admissions professor who went through the high and low points of my application with me (sub-par subject scores, but strong writing sample; great recs, but apparently my personal statement lacked specific reference to Indiana faculty--And she was right!!--My interest in Indiana had more to do with its overall reputation; I never really considered faculty support). This was much more helpful (and oddly, satisfying) than the generic letter I received from them this afternoon.
Chin up.