First off, as a newbie to the list, is there a searchable archive anywhere? I found the archives, but other than scanning the thread by subject, I couldn't see a way to find out if this question had been answered.... so, here goes... I was using 1.35. I decided to upgrade to 1.39, since I was having one of those days where I started upgrading other stuff, and figured, "what the hell....." With 1.39, certain classes in certain projects seem to show up in Intellisense (that is, the Class Viewer) as if they were best 7 or 8 levels deep in a boost namespace. That is, under my project, there will be a boost {} entry. I expand that, there's another boost {} entry. I keep doing that for a while, and finally, my class shows up. That class isn't really in the boost namespace. And it's only the MSFT browser that is confused, everything compiles and runs normally. If I back out to 1.35, this goes away. Any clues?