Egregoros

and

there's a lot wrong with the servers. but when you see that it means the server has an activity or an object that doesn't have an object or and activity associated it with. this is a known bug. the reason it happens so frequently and people see it on poast is because we had much, much more content happening during the time that whatever is causing it has happened. some of us have some ideas as to how we will handle it, but until that happens its just a happy little accident :)