WHY WONT LIMEWIRE WORK?

I have limewire. I use it to download torrents off piratebay.org. For some reason some of the torrents download to 100% but It says disc error or something where it should say complete. All the torrents are good, and have a good amount of seeders, but sometimes it will say downloading from 55 hosts, but i will still be making no progress. the speed will say 0kb/s. What is going on??