Hello there. I'm new to Mac. I know there's a built in firewall in OS X but is it sufficient? I mean, for example in Windows XP there's a some sort of built in firewall, but it's sloppy and most people tends to get one installed in their machine. So my question is, do I need one or the built in firewall good enough? When I run Win98 on my old PC, I have downloaded a firewall and it beeps whenever it see something suspicious. The one on the Mac doesn't beep... am I safe to assume that it will take care of me? The reason for asking this is that I frequent wireless hotspot alot and I don't want some dude to access my iBook without my permission. Sorry for asking a dumb question, but I'm still a newbie... Thanks!