Oohhh details.

1. OS version? Mac OS X Panther
2. What firewalls you have? Not sure
3. How much ram? Not sure
4. Hard Disk space available? Loads
5. Connection type? (eg: dialup, broadband, cable, etc.) Broadband with Virgin Media in the UK
6. Modem & router brand name & model numbers? Will check in a sec...
7. Where are you trying to connect from? Home
8. What version of LimeWire (LW) & Java do you have? (Go to LW's menu Help>About LW...) Will show both LW & Java version. 2.9.10, is that right?
9. Who is your ISP (Internet Service Provider)? Virgin Media
10. Do this simple test for us. Using your browser go here: http://www3.limewire.com:6346/ It said it worked
11. Are you sharing the connection with other computers or p2p sharing programs? Other computers - an old PC and another Mac, both wireless
12. Is this a your 1st try at LW? Yes
13. Do you see a brick wall in front of the blue world icon at the bottom of LW's interface? Can't see the sample image, but there's no blue world icon and no wall...
14. For those using a modem/router, how is your modem/router set up...are you port forwarding or is UPnP enabled? No idea?
15. What security programs are you using (antivirus etc)? None
16. What country are you living in? UK