Hi all: I have installed freeradius-server-2.1.1. when I start the radius server using radiusd -x I got the following error message : Could not link driver rlm_sql_mysql: rlm_sql_mysql.so: cannot open shared object file: No such file or directory Make sure it (and all its dependent libraries!) are in the search path of your system's ld. /usr/local/etc/raddb/sql.conf[22]: Instantiation failed for module "sql" /usr/local/etc/raddb/sites-enabled/default[152]: Failed to find module "sql". /usr/local/etc/raddb/sites-enabled/default[62]: Errors parsing authorize section. } Errors initializing modules What's the problem ? How can I solve the problem ? P.s freeradius version : freeradius-server-2.1.1 OS : Centos 5.2 Thanks for any help Regards Vicky