codice:
Warning: mysql_pconnect(): Client does not support authentication protocol requested by server; consider upgrading MySQL client in C:\Programmi\Apache Group\Apache2\htdocs\web\class\class.php on line 13

Fatal error: Client does not support authentication protocol requested by server; consider upgrading MySQL client in C:\Programmi\Apache Group\Apache2\htdocs\web\class\class.php on line 13
cose puo essere ragazzi?

help!

grazie