I need (I think) a utility that will for certain allow me to unplug a USB-connected disk drive from my Windows XP/Pro platform. I have an external hard drive that seems to retain its connectivity under certain conditions, even after I've stopped all "obvious" programs (i.e., those with some announced presence in the task bar) and open up the Task Manager and made sure there were no applications running, and no processes the I think would be doing any I/O. Somewhere, something is latching on to this device and just will not let go. So, is there a utility? Any other suggestions?