Sandbox push server down again?

Over the past few weeks I've seen several people mention pushes sent via the sandbox haven't been getting delivered. Today I'm also seeing that (though pushes sent via production are fine).

So it would appear to be down again. What's going on recently, any reason it's so unstable these last few weeks?

What is the actual error you are seeing? What is the apns-id of a push that had a problem?

Sandbox push server down again?
 
 
Q