I just want to point out that even with the fix that went in today, the behavior of enable_shared_from_this::shared_from_this when multiple shared_ptrs take independent ownership is inconsistent with the old behavior. The old behavior was that shared_from_this would return a shared_ptr that shared ownership with whichever shared_ptr took ownership of the object last. The new behavior is shared_from_this always returns a shared_ptr that shares ownership with the first shared_ptr to take ownership of the object. The attached example illustrates the difference when compiled against the old lib and svn trunk. I don't want to make a big deal of this, as I actually think the new behavior is more sane, but I thought I should point it out. My preferred solution would be to just point out the change in the next release notes or something like that. -- Frank