I have several websites installed in subdirectories on my Mac laptop at /Users/davidnorman/Sites where I pointed the OS-included installation of Apache to use as my DocumentRoot.
Drupal 6 probably won't ever work right on PHP 5.3.0, which is what Snow Leopard packs by default. My feeling is that since Ubuntu LTS still runs PHP 5.2, Drupal 7 won't work at production level on PHP 5.3.0 either.
The new Drupal 7 node editing form has changed the former fieldset formatting for displaying authoring, publishing, revision, and menu settings form fields.
Create a new block or page with Full HTML input format access. The following javascript will redirect you to the node number without having to highlight just the right part of the URL.