Hi, For my case, Internet Explorer is setted so that it converts every URI string to a URL-encoded UTF8 string and sends it to server. But it sends query-string "as is" (this is, an array of bytes). HTTP demon (or servlet engine) should interprete the URL-encoded URI string as the most suitable one. For Tomcat & Apache co-work case, the URI string is not interpreted well. So, I have made a "multibyte-query-string workaround" for Tomcat & Apache. (See http://www.javaclue.org/tomcat/patch32/qs-workaround.html ) Although the workaround is not complete, but it works well (in almost case) at least for "EUC-KR" charset. Thanks, Kim