Well, I have the same problem running a test environment @ mail4us.net.
There is no such functionality at the moment. Remember me, if there is still no script for it within the next 2 months (lol - I'm busy).
Do not touch the users table, because I will need the last login stored there. I think it's the best approach to have a cron script to clean up the database, if a user has not logged in within a specified period.
Your opinion?