It takes approximately 3 weeks (18 days) to return from Earth to Atlantis and vise versa without the ZPM energized stargate.

Rainbow Sun Francks continued to be credited as one of the Main Cast in this episode, although that would soon end early in this season.

Col. Sheppard: This is what I do when I have problems with my laptop. I turn it off, and then I turn it on again.
Elizabeth: I think this is a little bit more complicated than that.
Col. Sheppard: I'm just saying that if we're taking a page from the John Sheppard Book of Computer Repair, we're really desperate.

visual: Col. Sheppard looks suspiciously at Hermiod.
Col. Sheppard: Am I the only one who thinks it's strange we're working with an alien?
Rodney: Intergalactic hyperdrive technology's kind of new to us, so we need his help.
Col. Sheppard: Is he supposed to be naked like that?

Rodney: Wait a minute. There was a situation similar to this back at Stargate Command. I remember reading the report. An alien entity took control of the base computer, so they did a systems shutdown to destroy it. It survived by uploading itself into a MALP.

Rodney is talking about an incidence at the SGC when an alien probe infected the base computers. It hid in a MALP during an attempt to delete it with a systems shutdown. This situation was featured in Stargate SG1 "Entity."