No I just got them, and this is my first time with wafflepool as well so wasn't sure if this was something due to the pool or the thunders.  Apparently it's not normal for either.  I'm hashing away at 30 MH/s per unit with very low rejects and hw errors so doesn't seem to be having any ill effects on my mining.  I was more curious than anything, just hadn't seen it before.

Just started mining at wafflepool with my Zeusminer Thunder x3. I see this repeated quite often in my log file, usually consecutively:

[2014-10-27 15:25:18] Unknown stratum msg: {"id":null,"result":[],"error":true}

[2014-10-27 15:25:18] JSON-RPC non method decode failed: (null)

Anyone know what this means? Thanks in advance for any help.