Invalid namespace defined when using QName

When my schema defines an element of type QName, I get a name space of _ created. The resulting XML looks like this:

<?xml version="1.0" encoding="ASCII"?>
<person:Person xmlns:_="" xmlns:person="http://www.example.org/Person">
<person:Name>_:James</person:Name>
<person:Age>30</person:Age>
</person:Person>

Notice the xmlns:_="" and the _:James as the value of Name. The Name element has a type of QName. I'll attach my schema and code to this bug.

In the code, I'm creating the data object, saving it to a string, loading it as an XMLDocument, then saving it again to the output stream. The load seems to be the culprit in this case. If I save it straight after creating it, it works fine.

Let me know if you need any more information.

Thanks,
-Chris