i recently bought arduino duemilnove but when i connect to mac doesnt shows " found new network dialog box " . i tried installing FTDI drivers but of no use...but the green power led id on and led on pin 13 is blinking. i run on OSX 10.8. also when i try to upload a sketch it shows com port already …

my macbook air does not shows new network connection when i plug in usb??

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