Hey!
I submitted my application to Barnard 15-20 minutes late RD due to computer problems, and they reviewed me and I'm now a part of the 2012 class. I know exactly how you feel, I was totally scared/frustrated/nervous about it when it happened, but the best thing to do is just email the admissions officers and ask if your application has been "counted" (NO further explanation), and they'll give you a straight up answer. Judging by my situation, they won't immediately disqualify you. I'd like to believe they are fair people
Good luck!