I have discovered the root cause of my Rig/PC issues in the NAQP. It appears my RS232 CAT connection on the Mark V blew out. UGH! Perhaps some RF in the shack. I don't even own an amplifier and I was running 100W, but that seems to be the only conclusion I can come to as the root cause (unless the rig is just getting old like the rest of us. :) )