[Serusers] PROBLEM WHIT MYSQL MODULE.HELP ME!!

Hi all, i'm trying to install SER for the first time for a job at university. I'm using the distribution Fedora Core 2 and I have found some problems. This problems come out when I load the modules for MySQL support:mysql.so,auth.so,auth_db.so Asper having loaded this modules when i try to start SER whith the command serctl start it appears the following error: Starting SER : PID file /var/run/ser.pid does not exist -- SER start failed Checking the file log /va/log/messages I have found out that the errors that I had found trying to start the program were the following: Mar 7 15:51:29 localhost /usr/local/sbin/ser[4288]: Maxfwd module- initializing Mar 7 15:51:29 localhost /usr/local/sbin/ser[4288]: new_connection(): Client does not support authentication protocol requested by server; consider upgrading MySQL client Mar 7 15:51:29 localhost /usr/local/sbin/ser[4288]: db_init(): Could not create a connection Mar 7 15:51:29 localhost /usr/local/sbin/ser[4288]: ERROR: auth_db_ver: unable to open database connection Mar 7 15:51:29 localhost /usr/local/sbin/ser[4288]: auth_db:str_fixup(): Error while querying table version Mar 7 15:51:29 localhost /usr/local/sbin/ser[4288]: ERROR: fix_expr : fix_actions error May any of you help me,please?It is quite urgent. Thank you. Hear from you soon. Vincenzo