—the operative word being "roaring" at first. The SMU reset worked as advertised, except that when the machine revived, its formerly whisper-quiet cooling mechanism sounded more like an Airbus A300 as heard from inside the passenger compartment. Another call to Apple and between a brisk round of permissions verification and repair and an attempted reboot into "open firmware" (which didn't appear to take) we were yielded up a to a proper desktop with the blessed Silence of the Fans, and that's where we are right this moment. I must say, though, that I feel a little like the guy who adopted the cute puppy only to find that it will not be housebroken...
cordially,