Have an older build. Mobo is MSI 655 Max-LS running WinXP SP2 (yeah, I know it's a dinosaur, new build coming soon). Issue just started w/o warning. Was about to transfer some files to my Creative Zen Vision:M, and my player was detected but then the system froze. Had to restart and then the system would hang on startup when I had the player attached. When removing the player it started right up, but when reattaching would freeze and the only way to restart would be via the reset button. Tried attaching a USB 2.0 card reader and that hung the system as well. Tried different USB ports but same results. My mouse, a Logitech G5, works fine, but in device manager I have ?-Other devices with Logitech HID device and Logitech Pointing Device listed there. However, my printer works fine (an Epson 785EPX) and I can actually plug in an old Intel webcam which is USB 1.0 and it works fine as well, which makes me think there's something going on with my USB 2.0 drivers.