When Harry broke his arm after the Quidditch scene he cradles it close to him. In the next scene though he leans on it to escape a bludger. He them cradles it again. Can you lean on a broken arm?

When Errol is dropping the howler the seal is open. When Ron grabs it though it is closed.

When Professor Lochart lets out the Cornish pixies two of them pull Neville up by the ears. To do this the pixies were computer animated and Neville had clips in his ears to make them stretch. It seems they've been left in by accident though because his ears are still stretched when he's hanging from the chandelier.

The enterence to the chamber is a tap that doesn't work. Well supposably, the same tap is on when mrytle floods the bathroom earlier on in the movie.

When Harry is versing the Basilisk in the Chamber of Secrets, on top of the skull look out for a safety tip on the end of the sword.

In the dueling scene when Malfoy falls on the floor his hair is all messy but when he is pulled up by Snape it's neat again. Hey, maybe he had a comb.

When Harry, Ron and Hermione drink the polyjuice potion and Harry looks in the mirror his t-shirt is unbottoned. A further shot is taken then when another close shot comes up his shirt is bottoned up, all neat and tidy.

Watch for Hermione mouthing Harry's words when he says "Let's take him to Hagrid's" afetr Ron starts belching up slugs.

In the scene at The Burrow there's a magically spinning plate in the sink washing itself. When the boys are shown in front of the sink and you can just see an axle that the plate must be spinning on.

In transfiguration the people in the class are changing seats. I won't tell you who exactly. Try to see for yourself.

When Ron comes to rescue Harry there is no glass in the window as they talk. After,when the bars are pulled off the glass shatters. But didn't Uncle Vernon SCREW THE BARS INTO THE WALL!!

When Dobby is talking about stealing Harry's letters in his room all his draws except for the bottom one are fully closed neatly. In the next shot they happen to all be slightly open and uneven.

In the Chamber of Secrets Harry is cornered by a basilisk. It's face is right up to his. In the next shot though it's far enough away that Harry can bend down and pick up a rock.

In Dumbledores office while talking to Dumbledore and Lucius near the end of the film Harry's face is quite clean. If you keep watching later it gets dirty again.

In the library when Hermione finds the Polyjuice Potion recipe there is a shot of it. Look closely and you can read the writting. "....Into the form of an another." It would be really funny if you ready it now don't get it still. If this is you go to the bottom and the answer is there.

In the Quidditch match a rogue bludger is going after Harry. When it hits him the first time a player calls out "Watch yourself Harry." Harry happened to be in the middle of the field when he was hit and the peron who yelled this happened to be Oliver Wood, the keeper. What the hell was he doing in the middle of the pitch??

At the feast Ron's owl is flying through the hall. You can see at this time that there are baskets of fruit on the table. When Errol falls though, they're gone.

When Hermione is petrafied Harry reads out the piece of paper. Him and Ron are walking towards the camera. When the shot change Harry says "spiders flee before it," but his lips are moving in the wrong direction.

After being thrown out by the car at the start of the movie Harry starts to get up from the grass. In the next shot he is trying to get up AGAIN.

Rons howler from his mum starts off shouting at him from a bit of a distance then comes towards him and shouts some more. Watch for Harry's delayed reaction.

When Tom says that he set Hogrid up Harry told him that Hagrid was his friend. If you put on Icelandic subtitles it says Harry is his friend. He must be popular.

When Lockhart puts a spell on the snake to make it go up in the air in the dueling scene he is standing between Harry and the snake. After the snake falls to the ground he is standing way behind Harry. (Who ever knew he was smart enough to apparate?)

Also in the dueling scene when Snape yells Expelliarmus he does his wand movement them the camera looks at Lockhart to see the results. The thing is Snape is in the background still finishing his wand movement.

When buying books at Flourish and Blotts Lucius Malfoy says that the Weasley's can;t afford new books. When the shot is aimed at Ginny Lucius lowers the book then when the shot is aimed at him he lowers the same book again.

In Transfiguration when McGonagall is explaining about the Chamber of Secrets Harry gets a close up. At this time McGonagall walks past him (you see her robes go past). In the next picture though she's walking past Malfoy, Crabbe and Goyle who happen to be behind Harry. Listen and see wether Harry's footsteps match his footsteps sounds as he runs towards Ginny lying in the chamber.

When Lochart tells Harry, Ron and Hermione to get the pixies away in his first lesson Hermione puts on Imobulus so they can't move. Listen closely for the huge book one pixie drops. The fact is, you can't hear it. All you can hear is bits of paper flying around.

In the Chamber of Secrets Harry enters running to Ginny. He dropps his wand behind him. Tom then appears in front of Harry and picks up Harry's wand. He never even walked behind Harry to pick it up so it was obviously in the wrong place.

After escaping from the Forbidden Forest Harry shuts the car door. In the next shot though the car also shuts the door.

While in the Chamber of Secrets look out for a pimple above Harry's lip. Sometimes it's there, sometimes it's not.

Ron and Hermione storm into cubicles after drinking the polyjuice potion. When they go in all the doors are open and when Harry looks in the mirror they're all closed.

After being in the Chamber of Secrets Harry has scratches on his face. They seem to be gone though when he talks to Dumbledore that same day.

While the car is being smashed by the Whomping Willow can you actually see Harry and Ron in it?

THE ANSWER TO ONE OF THE ABOVE MISTAKES~
".... Into the form of an another." There is an extra an.