1. A method of redistributing responsibilities relating to resources in a multiple-node system, the method comprising the steps of: redistributing responsibilities relating to resources between a plurality of nodes in the multiple-node system on a window-by-window basis, wherein only those resources that are mapped to a particular window have their responsibilities changed during the time period associated with the particular window; each node of the plurality of nodes determining the mapping between resources and windows using the same hash function as each other node of said plurality of nodes; wherein the plurality of nodes includes a particular node that uses a resource index to access resource information associated with the resources for which the particular node is responsible; and wherein the particular node does not use said same hash function to locate resource information within said resource index.