(at around 30 mins) After the scene where Matt and a Chris have a beer, Matt meets Ann as a thunderstorm brews in the distance over the water. She apologizes for the previous night when Matt witness Chris abusing her says that he must me mad and draws near him. Just after Matt playfully touches her face you can see that he says something that was edited out. Her reaction after a camera change is a slight laugh, which confirms he said something. It appears as though he says "That's right" after she says "You must really be mad at me."
In the scene where Whitlock explains his GPS-equipped device to his soon-to-be ex-wife, the time in the PocketPC's upper right corner is displayed as 9.21. The camera changes, and when it comes back just a moment later the time is shown as 9.39.
Upon arriving in Cabot's hotel room the dialog from Legally Blonde can clearly be heard. After fighting with Cabot, dangling over the side of the balcony, and struggling back into the room (all of which took several minutes) the dialog has clearly only progressed for a few seconds, not minutes.
As Chae is driving Matt back to the police station after raiding Cabot's house, he throws a cigarette out of the car. However, as the camera pulls back and the car continues moving, there's no sign of the cigarette on the ground.
The mirror in the center of windshield is missing from the interior of the car as Denzel drives up to the hotel. However, when the camera cuts to show the car pulling up to the curb, the mirror has suddenly reappeared.
When Matt and Paul Cabot are fighting in the hotel room they fell through a window, but none of them gets hurt. When Matt climbs up the balcony after the balcony rail was broken, you can even see him placing his lower arm directly in the splinter of glass, what normally would cause several lacerations. Moments later he's sitting in a café with Alex and she finds a splinter in his hair, but there are no injuries or scratches on his skin.
(at around 32 mins) After Ann leaves Matt to look at the beneficiary document, the camera zooms in on the paper. Where "Mattias" is written it is evident that whomever on the crew filled out the forms began misspelling his name. The second "a" in "Mattias" was originally an upper case "E". The writer alternates upper and lower case letters but another "E" in the document looks very similar to the "A" before it was corrected. Further, all the other A's are capitalized, this one wasn't because only a lower case "A" could be made from the beginning of the "E" that was started).
(at around 50 mins) When Agent Stark from the DEA calls Chief Whitlock, over the phone he refers to the cartel boss correctly as "Scarcetti" before the camera cuts to him in his office. While the camera is with him he calls him "Sarsetti", and then when the camera cuts back to the chief he refers to him correctly again.
When Matt is sneaking around Ann and Chris' house, attempting to deliver her the money, and prior to the fire, the motion light of the neighbor's house turns on to reveal his presence to the neighbor. Matt, who was engaged in an adulterous affair with Ann, would most likely be aware of this light.
Chief Withlock has apparently been chief of police for quite a long time and Dr. Frieland has been a doctor for 10 years in the only hospital in town. But when they bump into each other they don't seem to know each other, despite the fact that chief Whitlock's picture has been on the front page of the paper. It has to be that Dr. Frieland does not read newspapers or he does not live in Banyan Keys.