More on the OC topic.

if you are profit mining, and the miner dies, and AM restarts it.  it seems the *stop* OC is sent, but the *start* is not.  Happens in all cases on all miners.

I'll have to go look at the long the next time it happens, but my guess is because its trying to restart the algo that had just killed the miner if may think it doesn't need to execute it, because it did that already - just a though.