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If you own an official Arduino board and you believe it is defective, please email support (at) arduino.cc specifying the model, serial number, version of the operating system you use and version of the Arduino software.
If you are looking for advice on your project or would like to find out which Arduino is best for your project please post to the Arduino forum in the “project guidance” section : http://arduino.cc/forum/index.php?board=3.0
If you’ve found a bug in the Arduino software, check if it's already known by looking at http://github.com/arduino/Arduino/issues then add it to the list.
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