A method and apparatus for managing communications in a distributed computing system wherein a plurality of computers are interconnected with a communications network. One register block includes logic for performing limited left shifting, while the other register block includes logic for performing limited right shifting. The bearing brackets rotatably support the shaft and are arranged to snap-in to latch surfaces on the mounting brackets with the pinion gears engaging the rack gears. The ultrasonic meter is configured to determine changes in the roughness of a pipe mechanically coupled to the ultrasonic meter based on a trend of the diagnostic data. The vault regularly updates stored personal data per the subscribed services so that the personal data is available in the latest data formats used by various industries. When a user node departs from the distribution network, a propagation signal is transmitted to the nodes below it in the network, causing them to move up in the network in a predetermined order.