Hi, How do you know what daemons that currently using the serial ports? My system behaves strangely; when it was init'ed to single user, the serial ports (/dev/ttyS0 and S1) can be probed using setserial -a. But when it was other than single user, setserial -a said that the devices were busy. Used by whom? Well, that's the question. Thanks in advance, Oki