Hi there. I have a problem... I have had my macbook air for about 2 years now but it's not working properly anymore and I think it's because of the software update. Basically it tells me that I have new updates, everything works out fine but then it start the process of restarting the computer(normal) and then it just BLOCKS. It can't restart the computer and none of the new updates are available.... I've been everywhere and I can't find any solution... Anyone can help me?