Simple plugin which checks user's login status and displays registration date and last login date columns on the "Users" page.
tiny fix to display "No login" if user has no log in from the time of plugin activation
added settings page - now you can enable/disable the automatic user deletion and set the inactivity time after the registration
fix for wrong function included in wp_login action hook
another little enhancement - not using deprecated 'update_usermeta' but 'update_user_meta'
cron could not run the function because some of the functions was not declared