Localized branes and black holes

We address the delocalization of low dimensional D-branes and NS-branes, when they an a part of a higher dimensional BPS black brane, and the homogeneity of the resulting horizon. Wt show that the effective delocalization of such branes is a classical effect that occurs when localized branes an brought together. Thus, the fact that the few known solutions with inhomogeneous horizons are highly singular need not indicate a singularity of generic D- and NS-branl states. Rather, these singular solutions are likely to be unphysical as they cannot be constructed from localized branes which an brought together from a finite separation. [S0556-2821(98)06420-0].