Hello all. I am starting to get very worried about a problem i have had recently with my macbook core 2 duo 1.83Ghz. I installed a couple of updates last week (Airport and time machine, and a security one) and ever since then i have not been able to boot it. It gets stuck on the Apple logo screen with the little spinning disk. It's very ANNOYING! Surely not a hard drive faliure? I've already tried booting whilst holding the option key and it still recognises the hard drive. I've also tried resetting the PRAM, but that didn't work either. I'm only 15 and have no other options as far as money is concerned. Please help me! Thanks.