15th Dec 2003
Continuity mistake: During the scene with the troll, Hermione crawls over to where the sinks are and if you look at the floor you will see that there are only a few wet spots. In the very next shot, however, the whole floor is soaked (this occurs before the troll breaks all the sinks). (01:10:40)
17th Nov 2003
Continuity mistake: Right after Hagrid tells the kids about playing music to Fluffy, they run into Professor McGonogall's classroom. Right before they run in, you can see a candle on a pole to the left of her desk. When they run up to her desk, it isn't there anymore. (01:51:35)