Geez, I was gonna suggest maybe laying off the pharmaceuticals, lol, but if they aren't typically a regular thing for you... I don't know what to suggest. Except maybe the addition of some, I guess! lol ... Seriously though, it's kinda scary for you. To be honest, sleep-walkers have always scared the crap outta me! Too many scary movies when I was a teenager I think, lol.

P.S. I hope it turns out you didn't really scream obscenities at your new neighbours. Or if you did, that they have a sense of humour.