Flashed the last nightly and everything is fine but one thing.
I can't send SMS anymore.
Looking over the net I found that it can be the SMSC, and in fact probably it is because I typed *#*#4636#*#* on the dialer and in Phone Information the SMSC was empty.
I found the right one for me (Wind Italy) which is 0791932350585800, I typed it and refreshed.
Then I rebooted the phone and tried to send and SMS and still nothing, but looking at the SMSC it was empty again...what should I do?
Galaxy Nexus 16gb with Android 4.2.2