been using a variety of different mini-usb cords for syncing, charging, you name it for the past few months now and have had no problems at all (so far)...and actually found that charging from a comp usb port gives me better charge rates (900+
) using a standard miniusb cable then when charging from my ac charger (~740 max) using either the ext-usb or a standard mini-usb. No clue why mine would be backwards from what others are experiencing but i guess just luck of the draw haha.