403 forbidden on Apache vHost

I'm using Mac OS X 10.6.8 and I'm trying to configure a vHost. I configured it and it gave me a 403 Forbidden, and I'm having trouble giving _www permission to read/write in ~/Document/workspace/dev

httpd.conf, I thought this might be causing trouble with me accessing public host, not vHost, but I'm not sure.

    #
    # 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"

I also made sure to uncomment the include on this:

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

And I defined these vHosts in 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>

And here is my /etc/hosts file:

    ##
    # 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

I've flushed the local cache with dscacheutil -flushcache
several times and tried chmod 755 ~/Documents as well, but no success. Can someone please help me figure this out?