GDR, QFE, LDR... WTH?

Update 2012-04-16: Later related blog entries (as the topic grew in its scope and version numbering/branch identification changed after Windows Server 2003): Branching Out (2009-05-18) – gives a generic overview of the branching mechanism, with examples Service Packs – Levels vs Installers (2009-05-29) – distinguishes between “service pack level” and “service pack installer” for disambiguation…

13