Once the gate disengages after SG1 escapes from prison, Linea's vines can be seen still wrapped around the gate. The part that was inside the ring would have been destroyed when the wormhole was formed.
When the gate dials in, to deliver the blind man, you can see that the same glyph appears when two different chevrons lock meaning it is the same image digitally flipped.
Just after Col. O'Neill wraps up SG1's exploration of the trees and moss planet, a man can be heard calling for help and running toward SG1. Col. O'Neill can be seen drawing his side arm with his right hand. The angle in this shot slightly obscures this movement but is nonetheless unmistakable. The very next scene, Col. O'Neill redraws his side arm once again in a clear close shot.
Daniel says that Botany Bay was the original name for Sydney Harbour. Botany Bay and Sydney Harbour are different bodies of water. The original name for Sydney Harbour was Port Jackson.
During the fight with Vishnoor's gang, a punch thrown by Teal'c clearly misses a man by several inches but the man is still knocked down.