No I don't expect you to drop a name, but unless AMD gives out info in public clearly stating ACC isn't working

A link from a trustworthy website with a "anonymous" source from AMD would be enough for me.
Also that the new BIOSes doesn't allow people to activate the 4th Core, is because AMD kindly requested all motherboard manufacturers to make this change to ACC, cause they didn't like the idea of people buying X3's and unlocking them, I thaught everyone knew about this? So no it doesn't tell me something in itself.
And you said it yourself you have no idea what the AM3 manufacturers are doing implementing ACC.
And as we can see ACC is working for this guy, he does gain stability from it, hes clock was unstable until he used ACC.
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