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?
Can you give us a total desciption of your set up:
1. What firewalls you have?
2. How much ram?
3. Hard Disk space available?
4. Connection type? (eg: dialup, broadband, cable, etc.)
5. Modem & router brand name & model numbers?
6. Where are you trying to connect from (home, school, work, etc.)?
7. What version of Limewire (LW) (Go to LW's menu Help>About LW...) Will show LW version.
8. Who is your isp provider?