Factual error: In the flashback scene of Lyle when his roommate steals the Napster code, the caption says Northeast University - 1999. The computer Lyle is sleeping at is running Windows XP, which was not commercially available at the time.

Continuity: During the flashback to Charlie's childhood, immediately before the kid gets his book slapped out of his hands, the book is open. When it cuts, some of the pages are suddenly sticking up.

Continuity: When Lyle and Charlie are arguing about calling him 'the Napster', note Stella Bridger in the background. Her cup goes from chest height to down on the table.

Continuity: In the scene where "the Napster" is changing the street lights, there is a shot where armored truck 128 is slowly moving behind a grey or white Saturn (right after you hear on the radio "Truck 128, what is your progress?"). In the next shot, where one of the men in the truck says "Ah, get us outta here," you see Napster's computer. On the computer you see the street camera looking down onto truck 128, and the Saturn is gone. [It looks like all the surrounding traffic has moved. Truck 128 is one lane closer to the curb, and the car and SUV that were on 128's right in the live shot appear to be to the truck's left on camera. Other cars are gone or have changed places as well.]

Visible crew/equipment: When the Mini Coopers jump out of the sewage tunnel, you can see the black ramp they launch off of to give the tunnel exit more of a dramatic effect.