Hyphen in application context name breaks XWiki

A hyphen in the deployment context of the web application makes xwiki unstable.

Symptoms:

1.) Sometimes the URL get be garbled by a HTTP Code 302. E.g. if you try to access a restricted page as unregistered User.

2.) On Firefox (3.6) and Epiphany I'm not able to create a link with "Last Change" or "Search".
I'm getting the error message "Fehler beim Laden der Daten".

Sometime I see also "Type 'org.xwiki.gwt.wysiwyg.client.wiki.EntityReference$EntityType' was not assignable to 'com.google.gwt.user.client.rpc.IsSerializable' and did not have a custom field serializer. For security purposes, this type will not be deserialized."