Also the advertized speeds can be deceptive. Do a couple speedtests to get a better idea of what your speeds should be:
http://www.speakeasy.net/speedtest/ http://www.t1shopper.com/tools/speedtest/
For me limewire doesn't max out my dowload bandwidth with one d/l. I usually have to have a couple going with decent sources. My max is about 180KB/s.