My Web site stopped working after I upgraded my Mac to Leopard. Instead of my Web page, I get a Forbidden error that says I don’t have permission to access the site. The folder is "world readable" and it worked just fine before the upgrade. Web sharing is turned on. How do I fix this?

Leopard installs the Apache2 Web server instead of the Apache 1.3 version used in OS X 10.4 and places the configuration files in /etc/apache2 rather than in the /etc/httpd folder used by Apache 1.3. The Leopard installation routines do not copy the information in the old configuration files to the new Apache2 installation and so the sharing of user Web sites is not enabled, since Apache2 is delivered with that feature turned off. The default installation does enable the main Web site located in /Library/WebServer/Documents.To turn on personal Web folder sharing under Leopard you want to edit the httpd.conf file in the /etc/apache2 folder and then copy your user specific conf file over from the old /etc/httpd/users/ folder. After that go to the Sharing applet in System Preferences and turn Web sharing off and then back on again. Apache2 incorporates a number of improvements and security fixes not found in the older version so the upgrade is a definite improvement once you have updated your configuration files and get your Web sites working again.