Not fun to watch.
Where's the content? I couldn't bother to sit through the entire thing, I was so bored! If you want to catch a viewer's attention, put something in your movie that's going to do it. Also, you had WAY too many buttons in this. Learn to use timers for your text, just like you're animating the text itself. Nobody's going to need longer than a second to read the word "meanwhile" so don't insert a button to continue underneath it! I felt as if I were watching a powerpoint slide show with animated transitions rather than a flash animation.
Seriously, re-design the way you make movies, and try again.