In the first scene with General Landry in sick bay, there is a woman in the bed to the right of him. There is also a man in a bed to his one o'clock. A short time later when Teal'c and Gerak arrive at the SGC, the woman has been replaced with a man, and the other aforementioned bed has vanished. There was nowhere near enough time to change the sick bay's layout as much as that.
During the first of the scenes where Carter walks in and
checks on Orlin, and the camera is facing Orlin, the screen of the laptop on the table is at a sharp angle, yet when the camera is facing Carter, the screen is completely vertical.
When Lt. Colonel Mitchell is walking and talking with Dr. Jackson on the Sodan planet, he says that he spent 2 weeks with them. However, when he did live with them, it was mentioned that he had been gone for at least 6 weeks.
General Hammond says "It's always darkest before the dawn" & says his Uncle always used to say that, adding that he was a "wedding planner". Wedding Planner wasn't really a job until about the '80s when Hammond would have been about 40, meaning his Uncle would've likely been at least 60-70 as that new career path was just emerging. It seems like an oddly unlikely detail to add to Hammond's back story so late in the series.
In fact, wedding planners have been around for centuries, although mainly for upper class or aristocratic weddings. More recently (from 1900), in the USA, they were called 'bridal consultants'. The first American professional association (Association Bridal Consultant) was created in 1955. Hammond was presumably just translating the job title into modern idiom.
Jolan tells Mitchell the planet struck by the Ori plague had its population decimated, that "there was no one left." Decimating a population means reducing it by 1/10th, not extermination. However, this expression is now rarely, if ever, used literally, and is taken to mean that a very large proportion was destroyed. 100% is a large proportion. Moreover, the Stargate supposedly gives travellers the ability to speak/understand a local language. 'Decimate' may have been its translator's best attempt.