Never trust people wandering around town at two in the morning with a laptop.
These kids were first spotted at the corner of Liberty and State (Ann Arbor, MI, USA). I asked them what they were doing, the white guy answered "just hanging out". I believe i saw Gnome, a terminal window (black bg, white text), a Toshiba or Compaq laptop (definitely not apple, dell, ibm, or sony), and possibly an Orinoco card (two flashy lights, upwards, on right side of laptop). Unfortunately i didn't stare long enough to see what was in the term, and my lens isn't that powerful.
Oh, you probably also shouldn't trust folks who wander around at 2 in the morning taking photos of people wandering around with laptops.