I to have had issue's with my DL speeds only in the last few months. I have used the free limewire version for years. I have the latest release 4.12.11
I have not made any changes to my system that would have resulted in the drop in performance. My ISP Metrocast says they have done nothing that would cause the drop in performance. Infact they said I should be seeing better performance since they upped the DL speeds from 4mb to 6mb.

It's getting so frustrating I am ready to uninstall LW and search for a different p2p.