The brief nudity: 1981 vs. 2010
Specifically the breastfeeding scene near the opening & the bath scene where we see a glimpse of Andromeda's breast & a full view of her bottom. (likely a body double, but still)
Now remember, this was a movie aimed at kids. So why do you think they were able to get away with the nudity in 1981, but didn't go there in '10? Times have changed?