Forbidden You don't have permission to access / on this server

I got this issue on Mac Lion OS X.
to fix this issue, just simple step.. here we go

Oper your terminal and type:

sudo nano /etc/apache2/extra/httpd-vhosts.conf 

add these line of codes:

< VirtualHost *:80>
   DocumentRoot "/Library/WebServer/Documents"
< /VirtualHost>

Restart your apache

sudo apachectl restart