Sounds like you might be firewalled. But maybe not.
See the following link & follow “ALL” the off-shoot links to find hints & extra skills to help solve your problem:
To continue files downlding (click on link) Don't make your searches too specific. Sometimes more general searches can help you find what you're after.
Can you give us a total desciption of your set up:
1. OS version? (eg: OS 10.3.9)
2. What firewalls you have?
3. How much ram?
4. Hard Disk space available?
5. Connection type? (eg: dialup, broadband, cable, etc.)
6. Modem & router brand name & model numbers?
7. Where are you trying to connect from (home, school, work, etc.)?
8. Who is your isp provider (Internet Service Provider)?
9. Are you sharing the connection with other computers or p2p sharing programs? If yes, please give details of set up.
10. Is this a your 1st try at LW or is this a new problem with an experienced user.
11. 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?