I eventually noticed that there was a klaxon sounding somewhere in the distance. It appears that the building, but not our floor, is on fire somewhere. As a result, the elevators are shut down and I'm sitting here, having been told that we shouldn't go anywhere as we could walk down into a fire. Ok.
There's a fire truck outside, but not much excitement, leading me to believe there's not much in the way of a fire.
I'm hoping that's right.
Update: Well, whatever caused the problem went away, as did the klaxon and the fire truck. I even got to go to lunch...