Microsoft admits WGA failures “coming up more commonly now”
Here is some more info about WGA issues for valid legal customers:
http://blogs.zdnet.com/Bott/?p=142&tag=nl.e540
Susan Bradley states Microsoft snuck us a WGA update without stating so or the changes:
http://msmvps.com/blogs/bradley/archive/2006/09/27/Communication-101.aspx