Hi all, I apologize if this have been posted before. I don't know if this is the right place to post this but I'll try my luck anyhow. Every night from 1030pm and usually through the night, missus and I hear sounds coming from the neighbors upstairs. Marble dropping, furniture shifting and stomping of legs. I have read everything from scientific to phenomenal, from architects placing marbles to allow contraction and expansion to feeding of kumantong. I mean seriously, I understand that walls in HDB's pretty thin, we can hear them walking. But shifting of furniture (every night? seriously? how about afternoons?) I'm neither scientific nor religious and before I start knocking on their doors, I would really hope some gurus here can shed some light on this 'century long' mystery. I realized that talking to the grassroots, HDB or police is almost pointless. So I've decided to get to the bottom of this myself. We're not really disturbed and it does not really affect our lifestyle but it's something that we don't need in our everyday life. I apologize if I sound offensive.