DOCBOOK-APPS: Mozilla and DocBook processing

Hi all,

Latest Mozillas are able to succesfully load, process and display XML
little samples as well as big ones
(http://www.w3.org/2001/05/xslt-example/REC-xml-20001006.xml).

Though when trying to process any minimal DocBook XML sample, Mozilla
freezes.

Has anyone else eperimented this? Is this known and why?

Camille.