No matching entry in the database

Dear friends, I have a problem activating users in the freeRadius server (with PCLinuxOS, MySQL Database): Username monkey Passwd quikec Getting the following radius.log : ********************************** Mon Sep 18 16:35:56 2006 : Info: rlm_sql (sql): No matching entry in the database for request from user [monkey] Mon Sep 18 16:35:56 2006 : Auth: Login incorrect: [monkey/quikec] (from client PortMaster-1 port 47 cli 22252956) ********************************** I would appreciate very much your hints. Thanks and regards Federico.