In the afternoon when Inger and her father discusses their plans for the night, there is no snow outside the house. When Inger returns with Kaj at midnight there is plenty of old, frozen snow outside the house, as it is in any other exterior shot in the movie.
At the last night out, Maria and her friend are both seen dancing, each with a male partner. Maria is prominently seen dancing in the mirror above Reine who is sitting in an armchair. Only seconds later, Maria and her friend stands aside, seemingly bored to tears as there is not anyone there asking them for a dance.
When Inger arrives by car to "Hagen" a bus stands dark and lonely outside. A few shots later the back lights of the bus are turned on.
When Inger steps off the train at 4:30 PM, it's almost full daylight. At that time of the year (around Christmas), it's dark in Sweden at 4:30 PM.
When Inger takes the bus, it is obvious that it is not a real bus stop outside the dance restaurant. There are parking lots marked in the street and the snow wall between street and sidewalk indicates that people do not usually enter the bus there.
In the end of the movie, when Kaj drives his car out from the small alley into the street he runs a red light (as the lights in the street are green). Untypical for his character, this must indicate that the street is closed off from any normal traffic for filming.
Robert introduces himself once as Robert Mårbrink, once as Robert Mårberg. The correct surname is Mårbrink.
During the "Berth Idoffs" concert, Kalle and Kaj are talking without their lips moving.
When Anja and Inger talk about Reine at the hairdressers salon, the elbow of a crew member is briefly seen in the right hand edge of the screen.