In article <200407091453.24046.bradd@cat.co.za>,
	Brad du Plessis <bradd@cat.co.za> writes:
> Can anyone shed some light on this problem?

The second machine probably doesn't have enough unfragmented memory
available to allow the necessary buffer allocation. You'll get a message
like this under NetBSD 2.0_BETA and above:

umass0: no buffer memory

Rebooting the machine with the USB device attached should fix the problem.

	Kind regards

-- 
Matthias Scheler                                  http://scheler.de/~matthias/