Juju, I own a PC. I said when I try to access the site on a Mac, not my Mac.
Are Macs not popular among the SoM crowd? I thought maybe I was alone in this problem because everyone at my school seems to have a Mac (and I guessed they'd be popular among the school-age kids using the site). I have a trusty old PC; it's big and clunky and not as fancy as the newer ones, but it works like a dream :)