Microsoft's official enterprise support blog for AD DS and more
Ned here. For all of our bilingual German readers, I wanted to point out that the Microsoft Germany DS support folks also have their own excellent blog:
Aktives Verzeichnis - http://blogs.technet.com/deds/
Be sure to add them to your feed reader of choice. Barbara, Fabian, and Rol write excellent stuff. For example, their latest post covers improving service reliability and performance by reconfiguring Kerberos PAC validation. And if your German is a bit rusty, you can use Windows Live Translator to convert it - here it is in English.
- Ned Pyle