403 prohibido en Apache vHost

Estoy usando Mac OS X 10.6.8 y estoy intentando configurar un vHost. Lo configuré y me dio un 403 Prohibido, y tengo problemas para darle a _www permiso para leer / escribir en ~ / Document / workspace / dev

enlace

    #
    # ServerName gives the name and port that the server uses to identify itself.
    # This can often be determined automatically, but we recommend you specify
    # it explicitly to prevent problems during startup.
    #
    # If your host doesn't have a registered DNS name, enter its IP address here.
    #
    #ServerName www.example.com:80

    #
    # DocumentRoot: The directory out of which you will serve your
    # documents. By default, all requests are taken from this directory, but
    # symbolic links and aliases may be used to point to other locations.
    #
    DocumentRoot "/Library/WebServer/Documents"

También me aseguré de descomentar la inclusión en esto:

    # Virtual hosts
    Include /private/etc/apache2/extra/httpd-vhosts.conf

Y definí estos vHosts en httpd-vhosts.conf

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

    <VirtualHost *:80>
            DocumentRoot "/Users/isaacbeckett/Documents/workspace/dev"
            ServerName isaac.local
            ErrorLog "/private/var/log/apache2/isaac.local-error_log"
            CustomLog "/private/var/log/apache2/isaac.local-access_log" common

            <Directory "/Users/isaac/Documents/workspace/dev">
                    AllowOverride All
                    Order allow,deny
                    Allow from all
            </Directory>
    </VirtualHost>

Y aquí está mi archivo / etc / hosts:

    ##
    # Host Database
    #
    # localhost is used to configure the loopback interface
    # when the system is booting.  Do not change this entry.
    ##
    127.0.0.1       localhost
    255.255.255.255 broadcasthost
    ::1             localhost
    fe80::1%lo0     localhost
    127.0.0.1       isaac.local

He vaciado el caché local con dscacheutil -flushcache  Varias veces y probé chmod 755 ~/Documents también, pero no tuve éxito. ¿Puede alguien ayudarme a resolver esto?