All tested boards hang right out of the box with specific power ON sequence

From the test I performed at the Arduino factory we found only a certain percentage of boards to have this behavior but it's certainly something that needs to be addressed.

We have updated the design of the Uno and other boards to Release 3 adding a diode between reset and 5v.

This will be a permanent fix for the future.

A more formal announcement will follow when we're done with the tests. It's holiday time in europe right now and most of us aren't at work right now.

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