I am hoping someone can help me with a few mining questions/issues.  I am trying to mine Vertcoin using the P2Pool locally and I am getting error messages that "Bitcoin it too old.  Upgrade to .5".  I am being disconnected and banned for bad behavior.  What's odd is it was working for a while until this began to happen.

I tried mining some of the P2Pool nodes and that is really hit or miss.  On some nodes I am getting massive numbers of hardware errors.  On others the latency is so high I am getting 30% stale share submissions!  Does anyone know why some nodes cause a high number of hardware errors?  Is thre a setting in sgminer I can use to eliminate them?

Thanks.