I found my FULL node locked up this morning similar to JOTA_US, in my case I have the Apollo full version from FutureBit so wonder HW setup is not an issue perhaps. Would you think something happenned to some FuutureBiot nodes while interacting with the Litecoin network to cause this?

In my case, I was able to log in to the appollo and browse both minr and node dashboards, try to re-start things but nothing worked until I power off/on the box. I noticed I had to start the node again after the miner started doing its thing.