I think I may have mistakenly said before that the TNS (warning you that a ghost is about to be culled, and you need to strengthen your connection) only appears for housed Sims. You actually get the notification for all Sims in your world. The idea being that you can meet the ghost in the world and socialize with them, and that extends the timeout.
Another clarification, for anyone having issues finding their dead Sim's tombstone/urn. Any ghosts that existed before the November 7th patch (like in an older save file) will not have a tombstone generated. So in other words the feature is not retroactive. And this is by design.
