One of my FreeBSD servers rebooted earlier today. There's nothing in the messages or dmesg.today files in /var/log to indicate why, only the timestamp when it started booting up again. This server is located where people have bumped against it in the past - unfortunate, but really the only place available for the machine. Other than these two files, is there any way to tell why a machine rebooted? (Obviously if somebody's butt pressed against the reset button, there won't be a log entry - I just want to be sure that there's nothing I'm overlooking that might indicate a more serious problem.)