Hmmm. You know, I think that happened to me too, only one year behind. In first and second year maths I did pretty well, but in the third year I started to lose it and ended up with "only" a 2.1 (yes, I know plenty of people would have been delighted with that but it was a disappointment since I'd had firsts up until then). If only I'd started to lose it a little sooner, perhaps I would have had a chance to recover from the lapse before doing my finals...