First time around I checked my Dell 700m, and thought it didn't have a lock-hole.

Just now, I found it (it wasn't labeled like everything else... just a hole).

I always have my DND sign out, AND turn on the TV when I leave my room. This is after placing the laptop in a weird place. I just wish this new laptop (silver) was black like my old one, so it could be more easily concealed.