My last two weeks experienced is not good I have a lot of penalties, overall I have 60 DNA for penalties and that's almost two days of mining for me, and just when the time for validation occur my wallet cannot sync for some unknown reason, I have tried it again and now monitoring my active peers, so far I have 14 peers a big improvement from 1 peer when I am not yet upgrading to the node.
Got activated again and now waiting for the next validation I hope there will be no issue on the next validation.
There is people reporting random penalties.
It has happened a few times to my node and without warning. Node was never down but penalties somehow showed up and mining was off.
IDENA chain might be getting DoS attacks or any such.