erbedo:
Well, this happens even If i plug it for the first time. At tny moment on my system I have ttyACM{0,1,2}, so when I plug in arduino it goes to the first available port I guess.
So this is the 4th Arduino connected to usb ports on this computer at one time? That is what that is saying. Those ttyACM0-2 devices should disappear within a minute of unplugging it.