When I was trying to clear out users who haven't used their accounts in a few months, I ran across something interesting.
It was showing that EVERY member hadn't used their account in 3 months. Now, looking at the list, none of these accounts have anything listed for LAST POST, LAST IP, or REG IP. It's not updating when they posted last (when viewed in the Control Panel).
I have never had this issue in previous versions (currently using the latest version), and prior to this had regularly deleted inactive members.
Bug?