Can't Awake G5 From Sleep


Hi. I have a dual 2G G5 (18 mos old) that I can't wake up with my Apple Bluetooth keyboard w/dongle or my Logitech wireless MX Laser1000 mouse. Not even the touchpad button on the side of my 23" Cinema Display wakes it. I have to force the machine to turn off by holding down the power button, then reboot. Is there any way to fix this? This is since upgrading to 10.4.2