Huh. Good catch. The response I was ready to post was "Nope, there were no reboots, and there were about a dozen other scripts that didn't exhibit this behaviour." -- but I thought, Meh, I better have a look.

No one's supposed to touch this server, and (I believe) it's on a UPS, but it looks like someone power cycled it this morning at about 0730. That's not good. I'll have to investigate some more.