In the bathroom she drops the gun in the water full of bubbles, but she never put bubbles in.
When Maggie jumps back into the Mustang she tosses her purse into the back seat, but it bounces outside the car, the strap catching on the convertible frame. Later she reaches for her purse in the back seat.
Claudia/Maggie's tattoo on her neck disappears and reappears throughout the movie.
When Maggie opens the box for the first time in the restaurant her pistol, Hammerli 280, is unloaded while Bob says "Its loaded". There is only one clip in the box. In the next cut there are two clips in the box and the pistol is in fact loaded.
In the Mardi Gras assasination scene, Maggie's Anschutz .22LR, match, single-shot bolt-action rifle is fired semi-automatically.
During the New Orleans hotel bathroom scene, Maggie engages in a crystal clear wireless conversation using a headset, but it seems there is no antenna or receiver attached. From the hidden compartment in the bathroom, though, she pulls out the headset and a receiver which she turns on then speaks.
Claudia buys cans of Progresso Ravioli in the store, and then serves that ravioli at dinner. One can easily see the areas of the ravioli that do not have sauce on them. The sauce is atop the ravioli, which clearly indicates that the ravioli was cooked separately and the sauce was placed over the pasta later. However, canned ravioli would have a completely different appearance; it would have sauce dispersed evenly all over each ravioli.
The album sleeve which Bob holds in the final scene with JP is clearly empty.
A death sentence is given by a Washington, DC judge in 1993. The District of Columbia abolished the death penalty in 1981.
When Maggie's file is opened by Kaufman, it lists Maggie's "aquire (sic) date" as 4/23/45. Neither the year 1945 nor (presumably) 2045 correspond with the 1990s level of technology seen in the movie.
In the opening store robbery and subsequent firefight with the police, one of the officers is using a rifle to pick off the criminals. Each time he fires, the accompanying sound effect is that of a firearm that is equipped with a sound suppressor, when it's apparent none is attached to the end of the rifle's barrel.
Bob's recollection of the location of Maggie's plot in the cemetery is inconsistent. He first said "Plot 48, row 12" and later: "Row 48, plot 12"
The computer instructor calls the input device he uses a mouse. The proper term for the device with the ball on top however is trackball.
When Bob and Kaufman are evaluating Margaret's status, Kaufman's computer screen shot of her summary shows 2 entries for Weapons Skills.