I'm running vista 64 and when i first installed vista and ran tivo desktop i was able to transfer normally to my tivo HD. (this was a few weeks ago). Now whenever i go on my tivo and pick a program to transfer from my computer, the speed is extremely slow. I left it for about 2 hours once and it transferred 4 minutes worth. The video format was Divx and it was 700mb. I tried giving it special permissions on the firewall and giving it high priority but it doesn't work. Also, my connection is wired.