Is it difficult to learn a second language?

http://www.youtube.com/watch?v=cZG7WFMUDg4
http://www.youtube.com/watch?v=eQX09lj8KUg&NR=1
http://www.youtube.com/watch?v=QODxDA9wO9A&feature=related
http://www.youtube.com/watch?v=QWsNk5ZWOUU&feature=related

4 videos totalizing about 30 minutes

Interview with Alexandre Penteado, an English teacher in a private school in Paraná and Sandra Lopes Monteiro, a professor that works at Celin, the language centre of Universidade Federal do Paraná. The main question that was asked to respondents was: Is it difficult to learn a second language?