WordPress MU

Hi to every1 again,
I've got a charset problem:
I use wordpress mu and simplepie to report the latest posts on the home page, the website has UTF-8 charset, and the wordpress blogs and the simplepie tool too.
But when someone posts chars like ù à è they Explode into è ò etc in the home page..
Example here
http://www.thesims3.it/thesims3-blog.php
Blogs are here: http://blogs.thesims3.it
Can anybody help me?
Thanks in advance! :)
Riccardo

Could this be a case of a database with tables still using latin1 where WPMU expects utf8? http://edubuzz.org/blogs/david/wordpress/changing-early-wpmu-db-to-utf8/

Yep,.

In older codebases, WP & MU used the server default, which is some cases was not utf-8.

Thanks for the reply but I use the latest version of WPmu and in the config there is:
define('DB_CHARSET', 'utf8');
So i really can't understand what is the problem!
:(

But simplepie could be pulling in posts with the latin1 charset...

Where can I check it?