> I'm powering my slug via only 1 USB cable through a USB powered HUB
> that only supplies 0.5A. I don't think this setup will change if and
> when I find someone to add the 2 extra ports for me.
If you plug current-using devices into your other existing port or any
of the 2 extra ports, then you may find that 0.5A is not enough capacity
to drive both the NSLU2 and those USB bus-powered devices.
Indications of this happening are spontaneous reboots of the NSLU2, or
corruption of flash drives when writing.