Same as with other Scrypt-N coin mining (such as vertcoin and panda), i also have a few HW errors every now and then. This doesn't affect my hashrate, it's only 0.02% of the total hashing power. I'm not worried about it.
It can be tweaked to 0%, but i found a TCC value for my cards that give me a fairly high hashrate, so i'm leaving it at this.

People are trading this coin at NXT-E now.   
https://www.nxt-e.com/default.aspx?m=18