Continuity mistake: After Sam has had her meeting and the girls have lunch, Charlotte's spring rolls change positions between shots. First there is one on top of another, then they are next to each other. Also, Charlotte's fork appears and disappears randomly.
Continuity mistake: When Miranda and Steve walk down the street and talk, they stop 3 meters ahead of a tree. In the close-up they are standing right next to the tree.
Continuity mistake: When Miranda and Steve walk down the street there are a group of workers behind them and a truck on the right. Suddenly they all vanish and both are meters ahead.
Continuity mistake: While having breakfast, Sam's fork suddenly disappears between shots.
Continuity mistake: While having breakfast, after Carrie talks about the green lantern, Miranda's arms swap between crossed or not.
Continuity mistake: At the bar, when Miranda scolds Sam, check the label of the beer bottle next to Sam: the bottle turns around between shots.
Continuity mistake: When Aidan is curing Carrie's burnt, her right hand is on the tea towel first, then jumps to being in between her calves, then bent against her tummy. No continuity at all.
Continuity mistake: When Sam gets milk all over her nose and mouth, there's a brief shot of her turning around and her face is suddenly spotless.
Continuity mistake: When Charlotte throws the racket on the bed, it changes positions between shots. Check the blue pattern on the sheets.
Continuity mistake: During diner with Big, Carrie's bag is pointing in an 11 o'clock position, but when Big grabs his glass it points in a 1 o'clock position.
Continuity mistake: When the diner with Big scene starts, he grabs the glass and brings it towards him. Shot changes and now the glass is away and he's repeating the previous movements.
Continuity mistake: When Sam watches the hot farmer Carrie says he's "young McDonald" while holding the cook book against her chest. A shot later her arms are lowered.
Continuity mistake: When Aidan reaches to Carrie to help her get up, her arm is quite clean. Half a second later it's covered in mud.
Continuity mistake: The second time Carrie falls while trying to lift the log both parts of her buttocks get covered in mud. The next time she falls the right side has magically cleaned itself.
Continuity mistake: When Carrie is about to carry the log, Aidan's left arm is lowered, but a shot later it rests against the log.
Continuity mistake: During breakfast, after Charlotte says she's taking golf lessons Sam raises her right arm and puts it under her cheek. The arm alternates between lowered or raised for the rest of the scene depending on the shot.
Continuity mistake: During breakfast, when Carrie talks about Paris, Sam drinks her coffee raising her fingers. When the shot changes half a second later, the grip is totally different.
Continuity mistake: During breakfast, when Carrie says she's a hostage Miranda is drinking coffee, but a second later her mug is gone and she has a fork in his hand. Then shot changes and she is pinching food but, but a shot later her hands are still.
Continuity mistake: Charlotte holds the fertility exercises book with both hands in one shot, but just with one in the close-up.
Continuity mistake: When Steve says he's in stage 1 cancer his hands alternate between crossed and uncrossed between shots.
Answer: I'm a long-time fan of the show, having re-watched it many times, and I definitely remember slightly different dialogue at the end of that episode than what's on my DVD. I'm afraid I have no idea why this change might have been made or any other info, but you're not insane.
Purple_Girl