Continuity mistake: When a police car is chasing Angela Bennett's car, the wiper blades on Angela's car are moving considerably faster, seen from outside the car, than from inside.
Revealing mistake: When Angela escapes in the dinghy from Jack's yacht, as she rushes to the shore, she smashes the boat into some large rocks. You can tell these are very fake plastic boulders.
Continuity mistake: When Angela arrives at the Cathedral offices, the elevator she gets off shows "20" on the frame, for the 20th floor, but all other activity references the office being on the 5th floor.
Continuity mistake: Just before Angela and Jack sing Moon River, his sunglasses are suddenly on.
Factual error: When Angela is leaving to go the Mexico, right after the computers are fixed, you can see some guys in US Army uniforms in the background. They have both officer insignias on their lapels, and NCO insignias on their shoulders. You can only be one or the other.
Continuity mistake: Just before the guy crashes the plane into the towers, he reports his height as 1,300 feet. There is an almost instant look at the console in front of him and you can see the altimeter is saying he's at 700 feet. Whatever the hackers can change (they seem to change his GPS system reading) they cannot change this which relies on sensors mounted in the plane itself.
Factual error: When Angela first gets the disk from Dale, he tells her to click the little icon in the corner and hit control, shift. But then she hits control shift first then clicks the icon. This would be recognized very differently by the computer and generally makes no sense to hit modifier keys after an action.
Continuity mistake: The "Ruth Marx" signature on the photocopy is different than the one Angela signed in Mexico.
Other mistake: When Angela arrived at the hospital to see Alan, the nurse behind the nurses station tells her "we have him intubated and pumped full of epinephrine." When Angela enters Alan's hospital room, he is not intubated.
Continuity mistake: In the scene where Angela is entering the computer convention, she pushes past a woman with a curly blonde French twist. In the next shot, the camera zooms out and she pushes past the same woman again.