Moved this to Anti-Theft.
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OK on the conference call we Mods have every Monday with McAfee someone from support tried to explain this to us. These chips don't activate themselves, the software has to be installed and activated for that to start and it kicks in if the machine hasn't been synchronized within a certain time period, 7 days if I recall correctly (sorry it was a long and involved explanation). If the system locks then you can unlock it with 8 digit passcode and the email used when the software was activated (not the download account password).
McAfee Support is the ONLY place that should be sorting out any locked machines that can't be unlocked for whatever reason. Sony Support most likely would have to contact then in any case to solve any problems put their way.
We were promised some new FAQ(s) to cover these issues soon. I asked again for people to post in these threads, and there are at least 4 in this section, but in case they don't I'm posting this to tell you we haven't forgotten you.