Okay, so I'm tired of my current fort and decide to kill it off as spectacularly as I can by inviting the circus to town. I find a nice candy spire and start DIGGING DOWN. I want to make the end spectacular, so I draft various non-essential dwarves into the military, give them all steel gear, and set them to train. I also set up "PROJECT: Dogpocalypse", which is a fancy way of saying I've got a cage stuffed with fifty war dogs hooked to a lever at the base of the mineshaft.
So I keep digging.
... and digging.
... and digging.
Finally, nearly 20 z-levels later I get a message that I've breached the underworld! I eagerly mobilize my military and have them stand at the top of the spire. My civilians are burrowed with easy access to the dogpocalypse lever.
We wait.
... and wait.
My military dwarves start getting hungry and thirsty. Reluctantly, I demobilize them, unburrow my civilians, and start digging further. Maybe the clowns just didn't see me. Meanwhile, I might as well start putting all this candy to use, so I make a bunch of peasants into strand extractors and tell my legendary armorer to start cranking out blue metal everything.
... so yeah, now I'm building a staircase right down to the slade, and the damn place is empty. I've literally emptied the spire, my entire 60-dwarf military is wearing full candy suits (even the fresh recruits). What the hell? Are they demoralized after all the checkers games or something?
I'd file a bug report, but I'm still running .05...
On the upside, my magma pump stack was ready a long time ago, and it's just some quick masonry work to channel it all inside my fortress. If hell won't bring fire to us, we'll do it ourselves, dammit!