Today I get it working on the i3... Really hard to get drivers working in W7 if you are not used to that SO...
Still can't do my mac close the app that is using the serial port, it only use it when arduino is connected, I can use mouse or annything in all USB, but when arduino connected to any USB it start runing something on it, still if arduino isn't sending data, 'Blink' loaded with the i3 and the problem persist.
I'll look for a solution in some mac forums because is a SO issue and not an arduino, maybe some mac users around could help, but I guess a mac forum will be more helpfull.
JS
EDIT: solved here http://arduino.cc/forum/index.php/topic,49173.0.html