I am testing USB HUB. I connect a memory stick and a Hard drive to the usb Hub and copy files from memory stick to HD. it works if the files are small, but the file manager freezes and memory stick LED is turned off when the files are big (300M something). In the Terminal, I mounted both of them and used CP to copy files and had same problem: the Terminal itself freezes. My power supply can provide enough juice. Just wonder if anyone tried this before? thanks.