So I turfed all my old Limewire files from my Mac, then I went back to the Limewire site to look for the beta 5.2.2 -- except they had a new Pro 5.1.4 version posted for Mac. Hmm. I wondered if this was the fix. I clicked on the Support tab. The clicked on the question "How do I get Limewire Pro if I've already paid?" They asked me for my email addy, then I downloaded 5.1.4. After the install, it launched. Just checked it out and it's working fine. 5.1.4 Pro seems to solve the problem.

Hi silentlodger !
Yes, 5.1.4 doesn't have problems with the Apple Java update. Apple optimised the update for their apps, not speceially for others...

But the LimeWire staff reacted well and the 5.1.4 version is ready for downloading since yesterday. Did do a thread on that in french forum, but didn't think about doing it here.
Sorry about that .

Have a nice day