Yes, I have afterburner installed, but only to be used if not using cgminer.  I don't like to mix two apps that modify clocks/voltages together.

Up to now, cgminer has been great at controlling clocks/volts so I don't want to bring afterburner into the mix especially if I'm seeing an issue I haven't seen before.  I want to get at the root cause of this before I introduce another variable into the mix.