http://www.theregister.co.uk/2005/05/26/ndigo_mono_no_no/
"A Novell-backed project seeking to create an open source version of web services technology in future versions of Windows could hit an IP hurdle from Microsoft.
Evaluation has begun on an open source version of Indigo, the web services communications layer due in Longhorn and updates to Windows XP and Windows Server 2003.
But Microsoft suggests there could be issues over licensing of its intellectual property (IP) used in Indigo - even though previous elements of Mono have been developed by the community-"
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