I'm running Leopard, the apple firewall is on and I also have Little Snitch installed which is a network monitor. I recently went to grc.com to scan ports with SheildsUP! and the result is all stealth except port 80 http and port 23 telnet which are open. I tried another online security scanner and it came up with the same result. I'm completely at a loss as to why these ports are open, I'm not a technically savvy user when it comes to UNIX and the command line. I do not even know how to turn telnet on! I'm not on a network and I have no sharing services enabled. A friend of mine who also has a Mac did the grc scan and his machine came up with total stealth. Anyone have any ideas on this?