My software update will open and the progress bar starts at about 10% and never moves. I read other posts saying it was downloading update and to give it time... I have a decently fast connection and left it running for almost 24 hours and it never budged. Does anyone have any ideas on what is wrong or how to fix it. If no one has any ideas, I will take it to Genius Bar, but thats a long drive for me, so I would prefer to figure it out on here! Thank you!!