Dear phpMyAdmin developers! I tested the 'phpMyAdmin 4.0.10.17' version with MySQL 5.1.X and 5.5.X servers and tthe problem is same. ( The two servers in question performs very well in the 'phpMyAdmin 3.2.5'. ) The relevant log from the MySQL: 1788455 Connect user(a)demo.com on 1788455 Query SET CHARACTER SET 'utf8' 1788455 Query SET collation_connection = 'utf8_general_ci' 1788455 Quit 1788456 Connect @server.com on 1788456 Connect Access denied for user ''(a)'demo.com' (using password: YES) 1788394 Quit Question: Why does not send the username to the MySQL, after the connect? It sounds like a bug. Best regards, Kiss Tamás