When not to use XML

Discovered the hard way that "xml" as the start of a namespace prefix (e.g. xmlfoo:) is a no-no. Apparently "xml" as a prefix within a namespace prefix is off limits -causes Jena errors.

Always run consistency checks...

Always.

Jena No Likey XML 1.1??

Having some headaches with Jena loading XML 1.1 based ontologies this evening. The underlying SAX parser is XML 1.1 capable but it seems that the parser is not instantiated with XML 1.1 options turned on.

Searching the net I'm not finding much discussion on the topic which leaves me wondering if I'm the first to arrive at this point. Does anyone know if there is a way, short of rebuilding Jena itself, to get Jena to load XML 1.1 based models?