I am planning on re-installing Windows 7 onto my computer to clean it up a bit. I have a 1.5tb external hard drive plugged into a usb hub, which is plugged into my computer. Whenever I try to copy files to my external hard drive, the transfer rate is extremely slow. When I start, it is about 10mb per second, then over time, it slows down more and more until finally it sits at about 40kb a second, which is extremely slow when copying gbs of data. USB 2.0 is supposed to transfer up to 600mb a second. I know it probably wouldn't be that fast but, I don't expect it to be in the kb range either. Any ideas about why this happens and what I could do to fix it?