A bunch of problems didn't seem explained in the movie, although maybe I missed it. They probably are answered in the book, but... ya...:
Starting with a minor one, when she's hallucinating, how does she know the name of the bug and what it does? Do they play that television broadcast into the place? They told her beforehand is the best they could imply, but it seems a bit timely she's hallucinate him saying that right as he mentions it...
The one I find big though is they said this came about because the districts were rebelling. If they were rebelling and all, wouldn't you think that for the 74 years there would be a ton more people standing out, making significant stances, doing all that stuff? To rebel for your rights and all already makes you so passionate, you'd think similar situations would come about over the years where people die, people get angry, stuff happens. Don't get it...