I haven't seen this before. On the KSBP feed page it says "up", listeners "0" (don't think I've seen this before either), but when I select a player it loads fine but nothing happens, the clock doesn't run and it's like nobody is home. There is activity on Flight Aware so I know things are happening. I have tried all the players too.
The feed does say down from time to time so something weird is happening for sure, the problem is when it says up but nothing happens.