Now that Macs are in the Intel world, flying off into new operating systems, leaving the PowerPC far behind, I'm wondering how safe are PowerPC Macs on the internet running Tiger or Leopard, with Firefox or Safari (Google Chrome doesn't work on PowerPC)? Does the processor make a big difference safety wise or is it strictly the browser and OS firewall? I'm wondering if PowerPC's might even actually be the safest platform since no one is probably targeting them at all. Does the obsolescence make it a safer platform, even if less capable? Not that I worry that much about being hacked into with my Mac still yet.