SPARQL XML namespace confusion

Hi all,

I've always assumed the correct namespace for SPARQL XML [1] is:

  http://www.w3.org/2005/sparql-results#

because the spec[1] (section 2.1) says so.

However, later in the spec [1] (section 4) it links to this XML Schema:

  http://www.w3.org/2007/SPARQL/result.xsd

which specifies a different namespace for SPARQL XML elements, namely:

  http://www.w3.org/2007/SPARQL/results#

Furthermore, the spec examples do not validate for me when running them 
through an XML schema validator (e.g. [2]).

What is the proper SPARQL XML namespace, and should there be something 
the errata [3] about this?

Thanks,
 -Mark

References:
[1]  http://www.w3.org/TR/2008/REC-rdf-sparql-XMLres-20080115/
[2] http://www.xmlme.com/Validator.aspx
[3] http://www.w3.org/2001/sw/DataAccess/XMLres-errata

-- 
Mark Wallace
Principal Engineer, Semantic Applications
Modus Operandi, Melbourne, FL, USA

I'm speaking at SemTech, June 21-15 
<http://semtech2010.semanticuniverse.com/>