[Freeradius-Users]modcall[authenticate]: module "unix" returns notfound for request

Hi, All! When I wanna run freeradius with the support of MySQL, I found such mes * modcall[authenticate]: module "unix" returns notfound for request 12 modcall: group authenticate returns notfound for request 12 * in "radiusd -X" mode,but the user in USERS file can be authenticated successfully. I've googled,but not find the solution. And i've searched from the mailing list,though there're some troubleshooting too,no way to solove. So pls help! Thx in advance! Regards for everyone. jedliu Jedliureceiver@gmail.com 2006-03-06