When you said "I can't beleive how little feedback there is for all the interviews.", did you mean that my feedback has not enough information? Just wanted a clarification there.
And answering your other question yes, the morning of my DMU interview my taxi took me to the wrong address which almost made me late, and I got dropped off at the wrong building right when it started pouring rain, so I walked in soaked and barely on-time. It stressed me out a bit, and I got sick as the day went on, so I think it might have affected me a little by the time I got to the interview. Things like that can happen though.