I've now just installed phase 2 of VS2008, the MSDN portion.
The files install only took a mere 10 (!) minutes, but the action HxMergeAll is a bitch of a wait for some half on an hour or longer! At this point Microsoft has failed in this portion of its installation program. The rest of the installation software has significantly enhanced regarding to performance and quality. I don't know the exact meaning of this itchy action.