Zoetrope

Here's how to get rid of the 403 Forbidden: You don't have permission to access /~username/ on this server if you've upgraded your Mac OS X 10.4 installation to Leopard:

>$ sudo cp /etc/httpd/users/your_username.conf /etc/apache2/users/

Just restart Web Sharing in your preferences panel and you're back on track. Apple is finally using Apache 2 in Leopard and forgot to copy the userdir configs.