I have an ipod touch first generation and an Mac Power Tower G5 and when i plug the ipod into any of the usb ports.... all it does is charge. The computer does not even recognize it and it doesnt show up in itunes either. I have already tried reinstalling itunes, deleting cache things, trying every other port and i do not know why it wont recognize it while the other mac computers in the house will.... PLEASE HELP!!