I've got an AEC card installed in the third extension slot on a DBS 96. No extensions are actually wired to the ports corresponding to this card (yet). The LED stays solid until the processor boots and once the system is up and running the LED starts to flash rapidly. I haven't tried to see if any analog extensions work yet, but I though this was strange since the digital extension cards stay solid. Is this normal, or is there some sort of fault? If so, how can I correct it?