i have windows vista on my desktop and daughter's laptop and had same problem on both of them till i found and fix the problem,was not the windows vista,was my inbound and outbound was not accepting the firewall,since i allowed firewall accept it,my limewire works well,we can download music and enjoy music and dance the hours away,why don't you check your inbound and outbound on your administrative tool,go where says firewall advanced and security,it might work,it did for us,good luck.