Hello , I have a problem during the installation of Koha 2.2 (install.pl) , I have this error message : Creating the MySQL database for Koha... ERROR 1062 at line 1: Duplicate entry 'localhost-kohaadmin' for key 1 256ERROR 1062 at line 1: Duplicate entry '%-Koha-kohaadmin' for key 1 /usr/bin/mysqladmin: connect to server at 'localhost' failed error: 'Access denied for user: 'kohaadmin@localhost' (Using password: YES)' ERROR CREATING DATABASE Couldn't connect to the MySQL server for the reason given above. This is a serious problem, the database will not get installed. Few month's ago ,I have install a old version of Koha without big problem . But now , I have no idea where is the problem ???? Could you help me . Thank's . PS:OS ->Redhat 9