Why are all of my downloads taking so long?? Please help...

Hey everybody, I just got my new G4 laptop and downloaded limewire. I'm running on a college ethernet connection so when I set the program up I selected T3 or higher internet connection. Every song I have tried to download takes a very long time (around 20 minutes if it even works), and I can't figure out why. The program is not very useful to me if it takes this long for each download. Even on my computer at home I could download songs in about 3 or 4 minutes on a cable connection... does anybody know what the problem could be? Should I have selected a slower internet connection. I have only tried to download songs from people with T1 or higher so I'm not sure what to do. Any help would be greatly appreciated. Thanks a lot for your time.