I have 2011 norton security for mac, and yet live update often failed, and everytime re update live update after a fail, it takes forever to download 110MB or around that of update data even though I have 23Megabit/second download speed. It seems 2011 Norton Security for Mac is download update data at 110Kilobyte/second or something like that! How can I fixed this? Thanks... How about stop live update from failing also?