Did you configure your firewall so it allows LW full access (advisable not to have 2 active firewalls b/c they can interfere with each other);  
Firewall configuration instructions (click on link) 
Do this test: 
Bug Report instructions & sample image Is the result True/False? If False then you have a firewall or modem/router partially blocking LW. 
Do this simple test for us. Using your browser go here:   
http://www3.limewire.com:6346/ The page should say 'Your test worked!'. What happens when you go there? 
Here's some tips:   See the following link & follow all the off-shoot links to find hints & extra skills to solve your problem:  
To continue files downlding (click on link)