I came across an errant Lucky that had spawned inside a wall on dungeon level 9. "One of us is luckier then the other!" I chuckled. Then I shot him with a few arrows and as he died my game froze. The music is still playing just fine, but otherwise the game is completely unresponsive (and has been for about ten minutes). Activity Monitor shows Dredmor at 100% CPU usage... This is Snow Leopard, 1.0.10, Steam, ROTG, no mods. Observe the Lucky in question:
Ah, thanks Daynab. I had checked the list a while ago, but clearly not recently enough to remember this was already on it.