I am new to Mac and recently bought a MacPro. Whenever I try to access help on the Apple Help Centre, every topic I choose is always unavailable. All I get is the same page advising topic unavailable, check your networks settings etc. I don't have any netwrok problems. When I contacted Apple Support they sort of said maybe they are having a problem, but surely if there was a problem many more people would be contacting them. I hope someone can point me in the right direction. I use Nortons Internet Security as well, but I'm not having any issues with other sites. Please help, i need to learn more about my Mac.