1. A method of managing deduplicated images of data objects that change over time, said method comprising: organizing unique content of each data object as a plurality of content segments and storing the content segments in a data store; for each data object, creating an organized arrangement of hash structures, wherein each structure, for a subset of the hash structures, includes a hash signature for a corresponding content segment and is associated with a reference to the corresponding content segment, wherein the logical organization of the arrangement represents the logical organization of the content segments as they are represented within the data object, and wherein another subset of the hash structures includes a hierarchy of hash signatures of said hash signatures for corresponding content segments so that the organized arrangement may be traversed to determine if content is represented by said organized arrangement of hash structures; and for each data object, maintaining an organized arrangement of temporal structures to represent a corresponding data object over time, wherein each structure is associated with a temporal state of the data object and wherein the logical arrangement of structures is indicative of the changing temporal states of the data object, and wherein each temporal state is associated with the hash structures representing the content of the data object during that temporal state.