I am having the same problem. I upgraded my Limewire to the 4.9.26 version and now I can't download anything. I can search but when I try to download, nothing happens. In the bottom lefthand corner of my limewire it says that it has detected a firewall but my firewall on my mac is turned off. PLEASE HELP this is so frustrating!! Don't ask me why I decided to upgrade when my original version worked just fine.