The performance chapter of the Smart Client Architecture Guide has now been published:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnpag/html/SCAG-CH08.asp?frame=true

Now that all of the chapters have been published, you can download the PDF version of the guide from here:

http://www.microsoft.com/downloads/details.aspx?FamilyId=8EC600BD-A2E5-44AC-9A8F-68D06361853E&displaylang=en

So now you can use it offline!!