I was getting the 100% CPU usage problem with 0.9.1.1, but after deleting the old .dat and .plist files, as per the trouble-shooting guide posted by the moderators, that problem cleared up. I just copied and pasted the code into the terminal and pressed enter after each line. If that doesn't work, I would also try appzapping and reinstalling utorrent. I still can't get a green light on connectivity, but that might also be a problem with my router (linksys WRT54G). If anyone knows of a thread dealing with a mac user trying to port forward on this router and could point me to it, it would be greatly appreciated.