Well, I managed to get it running: install mysql (& the rest) from extra, run mysql_upgrade (ok), restart mysqld, install from testing, now mysqld restart works, but on mysql_upgrade i get : # mysql_upgrade Looking for 'mysql' as: mysql Looking for 'mysqlcheck' as: mysqlcheck Running 'mysqlcheck' with connection arguments: '--port=3306' '-- socket=/var/run/mysqld/mysqld.sock' '--port=3306' '-- socket=/var/run/mysqld/mysqld.sock' mysqlcheck: Got error: 1045: Access denied for user 'root'@'localhost' (using password: NO) when trying to connect FATAL ERROR: Upgrade failed [root@beruska etc]# /etc/rc.d/mysqld restart :: Stopping MySQL Server [DONE] :: Starting MySQL Server [DONE] [root@beruska etc]# ...all config files are untouched. -- Marek Otahal :o)