When they are drilling though the planet to set the bomb, they drill through a magma tube, and the hull hits a temperature that can destroy the tunneler, yet when they get through the magma tube the temperature drops. If they drilled through the magma (liquid rock) wouldn't it just follow them down the new tube they were currently drilling and cause the destruction of the tunneler? They are tunneling down and there is gravity present on the planet.
Sam mispronounces "muon" as "moo-on" when it should be "myoo-on".
When the Goa'uld possessing Kianna Cyr agrees to take the bomb to the last part of the tunnel, she says the symbiote will protect her. However, the Goa'uld is the symbiote, so she should not be talking of the symbiote in the third person.