I initially downloaded v1.0 and put it on my TiBook and an old iMac. It worked great. It was cool! Then I took it to work, where there is one other guy with an iBook. He installed it, but we couldn't get it to work, despite our best efforts, and now it doesn't work with the iMac, either. Actually, the iMac sees that there is a copy on the TiBook but not the other way around, and files don't transfer. I just downloaded 1.2.1 and installed it on the TiBook, but it still doesn't work. It was way cool for the short time it worked. Oh well.