Hi Sairon.
I've got two "CPUMiner started for proof-of-stake" in my debug.log since I installed the CC version yesterday. The time-stamp at the top looks like it might be in UNIX time since it doesn't match mine. So the PoS minting seems to be working.
Does the CPUminer just not use much of the CPU to mine PoS blocks? It's still sitting at 1-3% CPU usage.