So I tried to view an interesting-looking thread, and it gave me a "that topic is missing or you do not have permission to access it." Again and again it did this -- I assume the poster just deleted it, and being a regular SR user who wasn't really paying much attention I don't even remember what the thread subject was beyond being something that made me nervous for a moment. But then right after that, I got the notification of a new private message -- so I opened my messages... and there's no new messages. Plus the notification is gone now.I'm used to looking past unreasonable paranoia and obviously this is most likely just some funky coincidence, but I'm puzzled -- I didn't think it was even possible to unsend a private message?