I have also had very slow data tranfer rates when copy/move between my desktop PC (custom built) and my Dell D620 laptop and between my Dell laptop and my work-workstation (XP Pro) via network connections and also when copying or moving data to and from
my external hard drive on my desktop PC. It is very frustrating and is often as low as 300Kbps!
I would be interested to know if anyone gets to the bottom of this or finds a solution?!