korean broken after upgrading 1.4.15

[hanpedro]

After upgrading 1.4.15, the Korean letters from database except other letters on web page are broken.

The language settings same as before upgrading.
httpd.conf AddDefaultCharset EUC-KR
php.ini default_charset = "EUC-KR"
mysql.cnf default-character-set=euckr

What am I missing?

[sckoh]

The language settings should be changed as follow.

httpd.conf AddDefaultCharset EUC-KR => UTF-8
php.ini default_charset = "EUC-KR" => UTF-8
mysql.cnf default-character-set=euckr =>utf8 COLLATION=utf8_general_ci

[seldon]

It doesn't work for version 1.7.2.
Any solution? thanks in advance -