that's the 1st time i ever heard that fasttrack has "swarming".
as far as i know it uses regular segmented http downloads..

i think we all are getting confused.
fasttrack, winmx, edonkey and perhaps some other use regular segmented downloads...think regular download managers like getright or reget or flashget or 50mill other prgrms.
they don't store "part" of the network on your hd unless you d/l that file