Breadcrumbs trail inside ZMI doesn't display umlauts correctly

Hello,

The breadcrumbs trail inside the ZMI doesn't display umlauts correctly 
when I'm two levels below the root of the ZMS site.

For example, our website title is "amcm GmbH (Bonn Köln DÌsseldorf)"
As long as you're at the sites root (i.e. home) and one level below 
umlauts are beeing displayed correctly.

This only happens when I'm navigating into two levels below root:
» amcm GmbH (Bonn K?... <http://dev.amcm.de/manage_main?lang=ger#_e4> » 
Medien-Lösungen <http://dev.amcm.de/e4/manage_main?lang=ger#_e31> » 
[Ordner] <http://dev.amcm.de/e4/e31/manage_main?lang=ger> Business 
Webhosting <http://dev.amcm.de/e4/e31/manage_main?lang=ger>

Is there sth. wrong with our ZMS setup or could this be a bug?

Regards, Sebastian

ZMS: ZMS 2.10.4-13 (Build #129d)
ZOPE: (Zope 2.10.4-final, python 2.4.4, linux2)
PYTHON: 2.4.4 (#1, Aug 9 2007, 17:04:46) [GCC 4.1.2 20061115 
(prerelease) (Debian 4.1.1-21)]
System Platform: linux2
System Time: 2007/09/25 11:03:49.727 GMT+2
Running For: 6 days 12 hours 10 min 34 sec
ZODB Location: /www/zope/amcm/var/Data.fs
Database Size: 108.4M


 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/zms-developers/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/zms-developers/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:[email protected] 
    mailto:[email protected]

<*> To unsubscribe from this group, send an email to:
    [email protected]

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/