Still I estimate after one does a full mirror it may only require at most 250GB, and that should in theory include everything, including some of the sources that cannot be obtained easily (those of you whom mirrored some repositories that contained sources which were later on pulled down/out would know what I mean). Mind you, community developments for N900 is still ongoing so fremantle mirror may end up becoming a fairly large space eater versus the rest of the maemo tablets