assuming this doesn't blow up the internet like the last fix - this is a very old bug that's been reported time and time again and nobody every bothered to debug or even report it somewhere where we could monitor it. It's buried somewhere in my stream, but basically is "things don't work right if you've got 'everybody in my address book' permissions" on "can send me their channel stream and posts". I think this is Michelle's problem and anybody else who has en empty matrix after making lots of connections.