Turn off your firewall

Turn on your anti-virus ( i suggest Panda anti-virus)

Reload your install (re-install) of limewire pro, first delte the old copy and all it's files and uninstall

Then after you startup the limewire wait about 3 minutes to connect. If still no connect go to "tools" then click "options" then "advanced" then "firewall config" and change to "do nothing" now restart Limewire.