Strange one this i feel.
I have a samsung laptop hdd in a revoltec external usb caddy. Just lately whenever i connect it to my XP base unit the system slows right down, it is recognised in ' my computer ' sometimes, but i can never open it, I either get an error saying device blah blah because of an i/o error.
Or when i try to drag n drop files i get an error saying file could not be moved / copiued due to incorrect parameter.
The same happens with a flash drive.
It makes no difference wether they are connected to the mobo sockets or to my powered usb hub. Both the caddy, and flash drive work perfectly on my Vista laptop.