I've got my own theory about the reported d/l speed problems.
Yes, absolutely make all the LW configuration settings recommended by murasame and as well check out the tweaks FAQ at
http://www.broadbandreports.com/faq/tweaks.
However! I have done all these and my LW d/l speed is still nasty (10k if I'm lucky and this is with 8+ hosts), while at the same time I can easily achieve 300k+ from http, ftp and torrent.
With Limewire, I wonder if too many people are choking their upload speed thinking that it will improve their download speed.
Correct me if I'm wrong, but with broadband, the one doesn't affect the other, correct? In other words, allowing full bandwidth for uploads will not slow downloads? I allow close to 100% bandwidth for uploads and I've not seen a negative effect on my d/l speed. My d/l speed sucks whether I give uploads 100% or turn them off altogether.
If the u/l bandwidth restrictions are the problem, then maybe we need a MASSIVE education effort to convince the new LW users that sharing at full speed is a *good thing.* Otherwise, maybe LW should just get rid of the option to adjust upload speed/slots totally.
Or maybe I'm just fulla shite.