Each time the cms.xsl is loaded we have the following warning
Category: org.ametys.runtime.cocoon.ThreadSafeTraxProcessor
Message: file:/D:/Dev/raphael/Ametys/templates/CMSWEB/trunk/webapp/cms/workspaces/cms/stylesheets/cms.xsl:145:41
It is due to a useless attribute to add the html namespace... useless because the serializer already do it.