I just tried to download the update, but the icon that had appeared on my desktop during the download disappeared and I was left with a folded-corner sheet of paper icon. When I clicked on it, I got the message "The document "LimeWireMac.bin" could not be opened, because the application program that created it could not be found".

Luckily I hadn't deleted my files. So mine appears to be working for now, despite the dire warning that I wouldn't be able to connect. Hope somebody figures this thing out for us.