So sometimes LW isn't even loading? First of all, try these fixes:

1. Delete LW's preferences folder when LW's properly closed. See point 3 here & also point 2 if you've used older versions of LW in the past (there could be a folder in either location).
Fixes for LimeWire
This will change all of your settings within options, you'll have to go back through afterwards & reset things. If you're not sure of your settings, go through LW's tools > options & write them all down, so that you can reset things later.

2. Some people have had connection problems with a couple of the latest Java versions. You can either try updating to the latest version here (I have this one & LW's working fine): Java SE Downloads
or try this older version, which has worked well for lots of people: Archive: Download Java 2 Platform Standard Edition (J2SE) 5.0 Update 11
Whichever Java version you use, download the JRE offline installer & remove any other Java versions before installing another one.

3. Leave the XP firewall on, just make sure that it's allowing LW through.
User Cant Connect - LimeWire

If LW opens ok but still won't connect, there's another fix to try here. Read the whole thread anyway
http://www.gnutellaforums.com/connec...t-fix-try.html