SOLO-MINE JoinCoin--
I set up solo-mining for JoinCoin. My GTX 960 gets about 29.9Mh/s with standard PentaBlake ("penta" algo). Currently, JoinCoin has a block reward of 2 coins, and a difficulty of ~300 for PentaBlake. If I get any coins in the next few hours, I'll report back.
--scryptr
EDIT:
While I was typing, I got this:

GTX 960 SSC solo-mining JoinCoin with standard PentaBlake
I will try a while longer. --scryptr
What does your config look like. Are you sure you have set it to mine penta? Since joincoin is a multi-algo coin, you need to specify the algo in the config file.
This pool works, I mined 120coins in less than 24 hours some days ago with one single 6x 750ti rig.