Now that Mac OS X has almost been out for a week, there are a lot of articles coming out concerning the security features and their effectiveness, or lack thereof:

• OS X Leopard Firewall Flawed
• Do not go Back to My Mac
• Leopard with chinks in its armor
• A Roundup of Leopard Security Features

Some people are pointing out some flaws with the way that the Guest account works and what is left behind after it is used then disabled.

The simple solution is to set the login shell to be /dev/null instead of using bash like the default.