How to solve this Multilanguage problem?

hi, I have followed this tutorial to modify my xwiki to be a full utf8 one: http://www.xwiki.org/xwiki/bin/view/Dev/CharactersSets It works and I could input multilanguages in the xwiki. However when I trying to put a internallink on some other charactersets. For example I modified these things on a page: [����������] and edit that new page. Then the strange things happened, the name of the new page turns to be XWiki.WebHome. Have anyone had this problem? How to solve it?