Other mistake: At lunch, when Sam is using a spoon to shape his mashed potatoes on the tray, his right arm clips through the tray just as he says, "Maybe I should clear out the east wall like this." Then, when Sam says, "Maybe I should fortify the south side first," he's using the spoon to move the mashed potatoes on top of the tray, but his arm and spoon are under the tray, so it looks as if the potatoes move on their own. Additionally, when Sam states that he's so confused, the spoon held up in his right hand appears to vanish in the next shot.
Other mistake: When O'Neill first goes to visit Teal'c in his cell the symbol of Apophis on Teal'c's head is upside down.
Visible crew/equipment: After the cannibal woman spits on the guard as he walks through the prison transport ship, he comes to a long haired guy. But as he comes onto screen you can see the end of the set piece for the ship with the walls of the shooting studio visible. Then when the camera cuts to another angle it shows the guard still has a lot of ship to walk through. (00:09:25)