My account has been approved and running adverts for quite sometime now. However, today I just got a message (it seems legitimate) from Google AdSense saying:
Congratulations, your AdSense account has been approved to show AdSense ads on your own website. Within a few hours, you will begin to see live ads.
Should I be concerned? They say that they review accounts to check for compliance, could this be some weird way of saying they rechecked my sites and they complied?