I can't see any good reason this should not be a fast-track review.
Well, although I'm new to review processes (so forgive me any great mistake in this mail), I think there are some very interesting issues. After reviewing a bit I've found two interesting themes (apart from some VC 7.1 warning issues): allocator swapping (what if allocators are not equal but can be or not swappable) and the usage of 2 or 3 allocators to avoid temporaries. I don't know if this is enough to discard a fast track, but in boost you never know how interesting a theme can be. Anyway, code seems much more polished and there are some very helpful helping-classes like allocator_construct that could be very useful when building new containers (for example, future associative vector and trees). Ion P.D.: I've just discovered the rebind_to way to make VC6 compatible with rebind allocators. Good god, some people really have talent!