I have installed the latest version (3.8.7) and I shall leave the iMac running for the next few days to ensure all the tracks are hashed. Sometime next week I shall reboot and see what happens. Many thanks for your suggestions. To date 1200 tracks have been hashed in one hour. This appears to be in accordance with everyone's thoughts so hopefully this will work. It was suggested earlier that I allow only a proportion of the tracks to be available on Limewire, eg. rare recordings. Since I get approximately 50 uploads a day I can see that the tracks that I would consider rare aren't shared as frequently as others. The most frequently uploaded track is a 'duet' between a tramp and [a man with an 'interesting' voice] from an album that is available in most decent sized shops. I wouldn't know which ones to share. It would be nice to be able recommend tracks similar to the Amazon pops up with 'if you liked that then you may like this'. On occasion I have noticed one person slowly collecting a whole album so I have tried to 'chat' but have never found anyone willing to communicate. Why have chat available? It seems to me to be another way of 'sharing'!