I am a mac user. Dowlonaded from limewire onto my mac, then onto my ipod. I then copied my itunes library, including limewire tracks, over to another mac, an imac, from here I loaded a new ipod mini, and now have got this limewire connection screen permanently stuck on the itunes of the imac, as well as inside the ipod mini. I've tried deleting the limewire connection in the itunes source list, but to no avail, and each time i click on it, it tries connecting, without success, and this also then locks-up the itunes. Any suggestions? Thanks.

Try turning sharing off in your iTunes preferences. You can do the same in LW in the lower section re: Share my music option.