Wirelessly posted (Mozilla/5.0 (iPod; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5) My Mac startup but then it goes toa gray screen.But when i boot into safe mode it cones up and then i went into disk utility and run a disk repair . It let it do it stuff when I came back i did a system software update. And then it told me to restart . So I restart it . Then it just went back to the gray screen and it's been like that for like 10 mins . So I shut it down. So can you guys help me out ??