Under Win98 (urgs) I get around 700M/h via USB.
Under Linux I get around 1.4G/h via Ethernet.
(Small files, non-mp3 like scripts etc, seem to be _much_ faster.)
Under WinNT (at work, no USB, no ETH, but a 155MBit/s uplink) I get around .... hmmm 25M/h via serial-port.