I'm really not one to give advice, since I can't get the system to work yet either, but I believe the installation guidelines mention somewhere that the system does not work with version 5 of mySQL.
It's not a problem of mysql versione but with the charset language. Follow this thread http://ez.no/community/forum/install_configuration/why_do_not_ez_team_answer_on_questions_when_we_ask_simple#main