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.
Continuity mistake: Thodin is brought and set down in Cobalt Stadium to have his public trial and execution, and is set down inside his bug-like walker. As it opens up, it reveals his arms are strapped to the insides and it opening forces him to spread his arms wide, with the walker opening very wide leaving him in a near sitting down T pose. He then looks around a moment at the Holo Prosecutor and the the camera cuts back to him. Suddenly the walker isn't opened nearly as wide, leaving his arms closer together. (00:31:50)