"Harry Potter star Daniel Radcliffe tells Radio Times he and Emma Watson, pictured, fell out a lot on set. “I remember one of the big arguments we had on the fourth film — we didn’t speak to each other for a couple of days … she was arguing about the Latin language, that nobody knows what it sounds like, what a Latin accent should be.
“And I was, like, ‘Yeah, but it’s still spoken a lot in the Catholic church.’”
It’s a wonder ginger co-star Rupert Grint didn’t turn grey in between takes."