LimeWire does not skip chunks when downloading a file. It requests one chunk from one host, the next chunk from another host and so on. Once most of the chunks are finished it iterates through the unfinished chunks, stops all stalled downloads and downloads those chunks from "good" hosts.

Randomly downloading chunks does not necessarily make sense, - even if LimeWire supported PFSP which it does not.

__________________
Morgens ess ich Cornflakes und abends ess ich Brot
Und wenn ich lang genug gelebt hab, dann sterb ich und bin tot

--Fischmob