While investigating some strange update requests on our new update server, I discovered that we have thousands of update requests from Beta users on OS X that aren't getting an update, but should. After some digging I realized that most, if not all of these are coming from users who have installed one of our official Beta builds and subsequently stripped out the architecture they do not need from it. In turn, this causes our builds to report in such a way that we don't know how to serve updates for them. We'll look at ways of addressing this, but the bottom line is that if you want to be secure: Stop stripping Firefox binaries!