<Locat xlink:href="http://www.w3.org" xlink:label="source" 
xlink:title=" "/>

your input document doesn't conform to the namespace rec.
You have to declare the xlink namespace (as you had in the stylesheet)

David

_____________________________________________________________________
This message has been checked for all known viruses by Star Internet
delivered through the MessageLabs Virus Scanning Service. For further
information visit http://www.star.net.uk/stats.asp or alternatively call
Star Internet for details on the Virus Scanning Service.

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list