Sophie turns 3 next month and her ears are floppy. We tried to get them to stand a few times but just decided what ever happenes happens. Her ears are rather large and her hair is really thick so that is probably why they didn't stand. I was a little disappointed at first but now it is just part of her charm.
As far as health problems I really haven't seen any so far. Although she did have one ear infection but the vet said it was caused by her allergies. Here is a pic of my floppy eared girl.