Problems with Online Schema Validator

Hi,

this morning, I've encountered problems when using the online Schema validator
on http://www.w3.org/2001/03/webdata/xsv, Upload section.
Every time I press button "Upload and get results", I'm immediately redirected
to the same page (i.e., http://www.w3.org/2001/03/webdata/xsv) with empty input
fields.

Is there currently a problem using this service ?

Kind regards,
Frank Berger