When Hill is in the library, looking up the unsolved murder, the article says that one of those killed was 9-months-old, the only victim with an age listed. Later, when talking the rest of The Others, he tells them one was only 18-months-old.
When Cyril interrupts Ryan's sale, he stands in the doorway as everyone is heading for breakfast. Two of the regular "gay" extras pass by twice. The first time they pass, there's a guy in a T-shirt behind them and when they pass by the second time, there's someone else behind them, followed by a group of inmates.
Toward the end, when Dr. Garvey is interviewing Gloria, he asks, "Do you like working here?" and is taking notes on a yellow legal pad. The camera changes to Gloria when she answers. When it changes back to Garvey, he's writing in a file of some sort.
Simon Adebisi hears that a patient got AIDS while in prison and steals his blood in order to infect others. It would take anywhere from 8 to 12 years between someone being infected with HIV and the disease turning into a full blown AIDS. It wouldn't be possible for someone to get AIDS as quickly as depicted.