Validator

We seem to have a problem with validating URIs (which we have had for a long
time).
For example:
http://southampton.rkbexplorer.com/id/person-00021

The RDF is fine, if I cut and paste.
But if I provide the URI it rejects with

RDF Load Error
An attempt to load the RDF from URI
'http://southampton.rkbexplorer.com/data/person-00021' failed. (Undecodable
data when reading URI at byte 12749 using encoding 'UTF-8'. Please check
encoding and encoding declaration of your document.)

And similarily:
http://eprints.rkbexplorer.com/id/ecs-soton/person-07113
Gives
An attempt to load the RDF from URI
'http://eprints.rkbexplorer.com/id/ecs-soton/person-07113' failed.
(Undecodable data when reading URI at byte 0 using encoding 'UTF-8'. Please
check encoding and encoding declaration of your document.)

It seems that the validator is sensitive to the order of the verbs in the
header, which it should not be (we think).
(Because of the way we generate the RDF, we sometimes get different orders.)
Are we wrong, or is the validator?
(This is a problem for us, because it means Zitgist cannot view our RDF, as
it seems to validate before being willing to look at it.)

Best
Hugh

-- 
Hugh Glaser,  Reader
              Dependable Systems & Software Engineering
              School of Electronics and Computer Science,
              University of Southampton,
              Southampton SO17 1BJ
Work: +44 (0)23 8059 3670, Fax: +44 (0)23 8059 3045
Mobile: +44 (0)75 9533 4155, Home: +44 (0)23 8061 5652
http://www.ecs.soton.ac.uk/people/hg