I've noticed this happen a few times (the last just just 5 minutes ago). I've cleared out the Zombie garden, waiting for the lively ones to get back up and killed them again. I've finished Pindleskin and his gang, and am rearranging my inventory to pick up his drops. Suddenly, my life drops to about an eigth, then I die with the message "*** was slain by pindleskin". I wasn't poisened, and upon retrieving my corpse it is clear that there was absolutely nothing alive there at all. Anybody else experienced anything similar?
I remember reading about a bug before, where the death explosions from fire and cold enchantments would re-trigger every time a dead unique reanimated horde (read: pindle type zombie) tries to get back up.