Do a speed test the link below will take you there post the results here. Then give us a little info and maybe someone can help you.
http://www.speakeasy.net/speedtest/
OS, Windows 98/2000/XP
CPU, P4 3.0 GHz/AMD 64 3200+Ghz
Memory, 256MB/512MB
Graphics/Video Card & Platform NVIDIA/Intel Extreme/Radieon & model
Connection, Dial-up/DSL
Internet servce provider, AOL,/ Comcast,/MSN
Modem and or Router brand and model
LimeWire Version 4.8.1/4.9.11
Java Version 1.4.2/1.5.4
What firewall you use if any
What Antivirus if any
Are you new to LimeWire or Experienced
An accurate description of your problem