Did you configure your firewalls to allow LW & Java access? If you have a high speed connection & you obviously do, many have internal firewalls which generally use NAT. This may be one part of your problem. That's why I asked about your connection devices earlier.

You could try either a beta version or ealier version instead to see if it makes any difference.
You will find a link to the beta version at the bottom of your personal LW download page. For older versions I'm not sure. But you can get one here: http://www9.limewire.com:82/download/
At least that'll help determine some things about the issue.

Once you buy softw, particularly online there is never any possibility for a refund or anything of that nature.