Three dollars and some change

*points up* What sulien77 said. I don't see Sam as the jealous type, and I didn't read her that way in the chapter either. I have no idea what a non-Stargate person would make of it, but I think given Sam's position as commander she's justified in making sure there are no potential security breaches.

I think the way Sam seemed to welcome Vala when she showed up on SG-1 is a good pointer towards her not being particularly jealous of people who spend time with her team - in fact, I could see her pulling Rory aside to get the gossip on them, and covertly using that as an opportunity to check out whether Rory is the real deal without letting her know it.