Using Confluence 5.1, we're experiencing an issue when attempting to search in high character languages (Japanese in this case) where both the suggested search keyword and search box input on the search page are displaying broken characters.
メインテナンスフロー becomes メインテナンスフãƒãƒ¼
The usual checks all come back positive for configuration being correct, and we can edit pages normally in high characters; only searching causes issues.
The server is a Windows server and is using IIS/Tomcat Connector to proxy the requests to the confluence instance.