Continuity mistake: In the apartment Guilherme had rented for Camila, the doorbell sounds completely different in the two times it is rung (first when a boy is delivering flowers to her and then when it's Guilherme's lawyer who rings).
Factual error: This 2007 film, set in 2001, shows several items which didn't exist back then (the first three began circulating in 2002), namely: euro banknotes; 20 Brazilian real banknotes; a version of McAfee VirusScan above 7.0; and a cell phone which, if I've correctly identified it, is Gradiente's GF-690 model, available from 2005. It's the one which belongs to Camila's friend Mari.
Visible crew/equipment: In the scene where Camila is making out with Rodrigo, one can see the cameraman's shadow on Rodrigo's back in the shot where he throws her on the bed.