zuckerberg was right for ditching him, im only going by what the film shows so correct me if im wrong.. but the only input saverin put into facebook was the $19k, he was only interested in making a profit, and seemed to act as though his 30% was more than marks 50%,and zuckerberg got more input from sean parker in the movie
From all the IM's, blog posts, and dealing with various people I've read...Zuckerberg seems to have some massive social issues. People constantly say they can't deal with him, some of them have even quit facebook because of it. I think a lot of the way the film portrays him is true- he does seem to be a guy who can't get along with others and kind of sees himself above everyone else. Heck, his IMs alone make that case.
I can't imagine what it'd be like to try to deal with this guy for two seconds, so Eduardo might, in fact, be a saint for dealing with him for so long.
Adding to that, Movie Eduardo (don't know about Real Life Eduardo so I can't speak to that) took an internship *on the other side of the country* right when the company was taking off.
If you did that at an established company where your position wasn't critical- announced to everyone that you were temporarily leaving to get a job at another place 3000 miles away- that would be grounds for a not temporary but very permanent dismissal. Let alone a fledgling start up where you are the CFO and your participation is very crucial.