There are loads of fake files around now & these typically show with heaps of sources. 500 sources for a file is a bit of a danger signal!!!! So...at a guess, you're downloading from a few ligitimate sources for that file.
Also, just because a host shows as T3 or higher... doesn't mean they actually have that speed. Fakes aside, you wouldn't believe how many idiots up their speed settings to try & get a faster download speed

Try doing a new search, & go for a file with 10 sources or less. Modem sources are usually pretty good but if you're after a fast download then that's not going to happen! You haven't said what type of file you're trying to download...video or audio. Check the link below anyway, it has tips for both

http://www.gnutellaforums.com/showpo...33&postcount=2