I'm having the same problem. OS 10.3.9, 1 gig ram, and the latest version of Limewire. It had started crashing on the free Limewire version and I thought the problem might go away when I went for Pro. Stll crashes unexpectedly. I asked support for advice last weekend but still have heard nothing - Limewire doesn't support Mac very well. They probably don't have a clue. Have you figured ut the problem?