said by xirian:Have you tried rebooting the box?
I'm not at home, so I can't reboot it from here. I believe the problem began after a reboot, though. The power failed at my house yesterday, and this issue began after power came back and the box rebooted.
Hopefully it didn't download and apply new firmware that includes this "feature".
I posted on the Slingbox forums to see if anyone else is having this problem. When I get home, I'll try a few things (such as plugging a TV into the same outputs as the Slingbox to see if it blinks yellow on that).
I'll also try plugging a non-cable box video source into the Slingbox (like a DVD player). If it doesn't blink yellow with that, then Cablevision probably did something, which I'm sure they'll deny if I call them.