and maintainer of:
I am currently considering upgrading to OS X 10.2 from 10.1.5, the actual upgrade does not worry me (I will be making a backup though), I am more concerned with all the small things I have tuned, tweaked and customized over time.
I will try to collect some of the material here in my journal, and perhaps others can use them aswell (or comment on them).
Enabling the Root account
Open the "NetInfo Manager" (located in the Applications/Utilities folder).
2. Select "Authenticate" from the "Security" submenu (under the "File" menu item).
3. Select "Enable root account" from the same submenu.
Setting the Hostname
HOSTNAME="your favorite hostname"