Always like this. I spend few hours away from the 'net, and all of the sudden interesting things happen! :-) I have to invest in some wireless provider, or (better) in some temporal pocket device to stretch daytime...

WS-BusinessActivity is out: http://msdn.microsoft.com/webservices/understanding/specs/default.aspx?pull=/library/en-us/dnglobspec/html/wsba.asp

and a party of GREAT architects/engineers wrote a fundamental article on the ws transactions: http://msdn.microsoft.com/webservices/default.aspx?pull=/library/en-us/dnwebsrv/html/wsacoord.asp