PLEASE HELP!!! I have a Macbook Pro and am running snow leopard. I did the itunes update this AM and now my computer boots up to the blank blue screen after being on the greay apple/timer screen for a long time. On another attempt it I got to log in and it immediately logged me back out. I tried opening in safe mode and things seemed fine there, but I cannot get in with a normal log on. As a side note I talked to a co-worker that did the itunes update on their windows machine last night and their hard drive crashed. This could just be a coincidence but has anyone else seen an issue? I am going to try to boot it up with the Snow Leapord disk in tonight and see if I can get it to work from that, otherwise I have a genius bar appt in the am to see what they can find out. It's like it trashed the start-up OS directories. I should add that this SAME EXACT THING happened to me the second week of Jan and we had to wipe out the hard drive and reload the os then my data from back up, so this could just be a hard drive issue... but I was told that was rare for a mac. thanks!