Anyone got problems with the MS reciever for wireless keyboard/mouse, when it loses connectivity to the devices after unplugging it from the usb port (or turning off all power) and you can't get the devices re-registered at all? Right now whenever the thing is powered down the only way i can get the regular mouse/keyboard working again is to use a seperate ms wireless device, register it with the reciever, then re-register the original keyboard/mouse. Can't figure out if it's an MS problem or mobo problem, but i don't think it's software based as it's doing this from post.