Hello, I am going to be buying my first mac and first laptop in January (following people's advice and waiting to see what MacWorld brings). I have a quick question about network security with macs. How good is the network security with Leopard, ie. firewall type defences? I don't even know how likely it is that someone will even attempt to "hack" in to my computer, or if it's possible for someone to give my computer a virus over a wireless network, so is this something I should be concerned with - and if so, what can I do to prevent it? By the way, I will be using it on my encrypted/secured network at home, but I am mostly concerned about public "hotspots" and my school's network - which if it works as well as the rest of the garbage at my school, does not make me overly confident in their ability to protect my computer. Thanks in advance. Cheers.