your radius.conf ? The correct configuration in radiusd.conf: (PAP+rlm_sql_mysql)
modules { ... pap { encryption_scheme = crypt } ... } authenticate { ... Auth-Type PAP { pap } ... } and in radcheck: Auth-Type := PAP =nsinit= - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html