I have a project that uses boost.threads and sdl, under vc7.1. Because of sdl, I have to link with the non-debug multi threaded dll version of the runtime libraries, even on debug builds. However, autolinking picks the debug version of boost.threads so I get conflicts. Is it right to disable autolinking and force a non debug version of boost.threads? Any ohter idea?

I guess that or else change your IDE settings to *not* define _DEBUG. It's been an annoyance to me for some time that the IDE defines _DEBUG contrary to it's documented behaviour :-( John.