You may have problems running Limewire 4,12 on a G3. I do and so I use an older version of Limewire, and I have a feeling this would cure your problem.

Does everything else on your computer work perfectly?

I could suggest re installing java and removing the older java version .. This is described here in the links where it says "Tiger users should update their Java to 1.5" http://www.gnutellaforums.com/showth...threadid=36377
but I'm not convinced it would solve your problem.

I must go now, but could send you an older version later. But tell me, Is this your first time using Limewire?